Certificate for #19836 ⟨a, b | aaa=a, babb=aba⟩

Completion settings:

[1] aaa=a

Axiom: aaa=a.

Defines rule #6.

Referenced by [3], [4], [41].

[2] aba=babb

Axiom: babb=aba.

Flip LHS and RHS.

Defines rule #2.

Referenced by [3], [4], [5], [6], [7], [9], [10], [11], [17], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29], [30], [31], [32], [35], [36], [37], [38], [40], [41].

[3] babbbbbb=babb

Overlap of [1] aaa=a with [2] aba=babb:

aa a aba

Critical pair: aababb=aba.

Reduce LHS:

[2]a(aba)bb
[2]⇒ (aba)bbbb
⇒ babbbbbb

Reduce RHS:

[2](aba)
⇒ babb

Defines rule #1.

Referenced by [11], [12], [21], [22], [25], [27], [28], [29], [31], [32].

[4] babbaa=babb

Overlap of [2] aba=babb with [1] aaa=a:

ab a aaa

Critical pair: aba=babbaa.

Reduce LHS:

[2](aba)
⇒ babb

Flip LHS and RHS.

Defines rule #7.

Referenced by [6], [7], [13].

[5] abbabb=babbba

Overlap of [2] aba=babb with [2] aba=babb:

ab a aba

Critical pair: abbabb=babbba.

Defines rule #3.

Referenced by [8], [11], [18], [20], [21], [22], [23], [25], [26], [27], [28], [29], [31], [32], [37], [38], [40], [41].

[6] babbbbaa=babbbb

Overlap of [2] aba=babb with [4] babbaa=babb:

a ba babbaa

Critical pair: ababb=babbbbaa.

Reduce LHS:

[2](aba)bb
⇒ babbbb

Flip LHS and RHS.

Defines rule #8.

Referenced by [9], [14].

[7] babbbabbbb=babbba

Overlap of [4] babbaa=babb with [2] aba=babb:

babba a aba

Critical pair: babbababb=babbba.

Reduce LHS:

[2]babb(aba)bb
⇒ babbbabbbb

Defines rule #4.

Referenced by [15], [19], [22], [24], [26], [28], [30], [32], [35], [36], [38], [40].

[8] babbbaabb=abbbabbba

Overlap of [5] abbabb=babbba with [5] abbabb=babbba:

abb abb abbabb

Critical pair: abbbabbba=babbbaabb.

Flip LHS and RHS.

Defines rule #12.

Referenced by [10], [11], [16], [19], [20], [21], [24], [25], [26], [27], [28], [30], [31], [32], [35], [36], [38], [40].

[9] babbbbbabbbb=babbbbba

Overlap of [6] babbbbaa=babbbb with [2] aba=babb:

babbbba a aba

Critical pair: babbbbababb=babbbbba.

Reduce LHS:

[2]babbbb(aba)bb
⇒ babbbbbabbbb

Defines rule #5.

Referenced by [12], [13], [14], [15], [16], [19], [20], [21], [25], [28], [32], [37], [41].

[10] aabbbabbba=babbbbbaabb

Overlap of [2] aba=babb with [8] babbbaabb=abbbabbba:

a ba babbbaabb

Critical pair: aabbbabbba=babbbbbaabb.

Defines rule #16.

Referenced by [17], [21], [27], [31], [36].

[11] babbbbbabbbabbba=bbabbbbbabbba

Overlap of [3] babbbbbb=babb with [8] babbbaabb=abbbabbba:

babbbbb b babbbaabb

Critical pair: babbbbbabbbabbba=babbabbbaabb.

Reduce RHS:

[5]b(abbabb)baabb
[2]⇒ bbabbb(aba)abb
[5]⇒ bbabbbb(abbabb)
⇒ bbabbbbbabbba

Referenced by [16], [19], [20], [21], [27].

[12] babbbbbaabbbbbb=babbbbbaabb

Overlap of [9] babbbbbabbbb=babbbbba with [3] babbbbbb=babb:

babbbbbabbb b babbbbbb

Critical pair: babbbbbabbbbabb=babbbbbaabbbbbb.

Reduce LHS:

[9](babbbbbabbbb)abb
⇒ babbbbbaabb

Flip LHS and RHS.

Defines rule #15.

Referenced by [27], [28].

[13] babbbbbaabbaa=babbbbbaabb

Overlap of [9] babbbbbabbbb=babbbbba with [4] babbaa=babb:

babbbbbabbb b babbaa

Critical pair: babbbbbabbbbabb=babbbbbaabbaa.

Reduce LHS:

[9](babbbbbabbbb)abb
⇒ babbbbbaabb

Flip LHS and RHS.

Defines rule #26.

[14] babbbbbaabbbbaa=babbbbbaabbbb

Overlap of [9] babbbbbabbbb=babbbbba with [6] babbbbaa=babbbb:

babbbbbabbb b babbbbaa

Critical pair: babbbbbabbbbabbbb=babbbbbaabbbbaa.

Reduce LHS:

[9](babbbbbabbbb)abbbb
⇒ babbbbbaabbbb

Flip LHS and RHS.

Defines rule #27.

[15] babbbbbaabbbabbbb=babbbbbaabbba

Overlap of [9] babbbbbabbbb=babbbbba with [7] babbbabbbb=babbba:

babbbbbabbb b babbbabbbb

Critical pair: babbbbbabbbbabbba=babbbbbaabbbabbbb.

Reduce LHS:

[9](babbbbbabbbb)abbba
⇒ babbbbbaabbba

Flip LHS and RHS.

Defines rule #25.

[16] babbbbbaabbbaabb=bbbabbbbbabbba

Overlap of [9] babbbbbabbbb=babbbbba with [8] babbbaabb=abbbabbba:

babbbbbabbb b babbbaabb

Critical pair: babbbbbabbbabbbabbba=babbbbbaabbbaabb.

Reduce LHS:

[11](babbbbbabbbabbba)bbba
[11]⇒ b(babbbbbabbbabbba)
⇒ bbbabbbbbabbba

Flip LHS and RHS.

Defines rule #28.

Referenced by [18].

[17] aabbbabbbbabb=babbbbbaabbba

Overlap of [10] aabbbabbba=babbbbbaabb with [2] aba=babb:

aabbbabbb a aba

Critical pair: aabbbabbbbabb=babbbbbaabbba.

Referenced by [18], [21], [28], [32].

[18] aabbbabbbbbabbba=bbbabbbbbabbba

Overlap of [17] aabbbabbbbabb=babbbbbaabbba with [5] abbabb=babbba:

aabbbabbbb abb abbabb

Critical pair: aabbbabbbbbabbba=babbbbbaabbbaabb.

Reduce RHS:

[16](babbbbbaabbbaabb)
⇒ bbbabbbbbabbba

Referenced by [33].

[19] babbbbabbbabbba=bbabbbbbaabb

Overlap of [11] babbbbbabbbabbba=bbabbbbbabbba with [2] aba=babb:

babbbbbabbbabbb a aba

Critical pair: babbbbbabbbabbbbabb=bbabbbbbabbbaba.

Reduce LHS:

[7]babbbb(babbbabbbb)abb
[8]⇒ babbbb(babbbaabb)
⇒ babbbbabbbabbba

Reduce RHS:

[2]bbabbbbbabbb(aba)
[9]⇒ b(babbbbbabbbb)abb
⇒ bbabbbbbaabb

Referenced by [20], [22], [23], [24], [25], [26], [28].

[20] babbbbbaabbbbabbbbba=bbbbabbbbbaabb

Overlap of [11] babbbbbabbbabbba=bbabbbbbabbba with [8] babbbaabb=abbbabbba:

babbbbbabbbabb ba babbbaabb

Critical pair: babbbbbabbbabbabbbabbba=bbabbbbbabbbabbbaabb.

Reduce LHS:

[5]babbbbbabbb(abbabb)babbba
[9]⇒ (babbbbbabbbb)abbbababbba
[2]⇒ babbbbbaabbb(aba)bbba
⇒ babbbbbaabbbbabbbbba

Reduce RHS:

[11]b(babbbbbabbbabbba)abb
[8]⇒ bbbabbbb(babbbaabb)
[19]⇒ bb(babbbbabbbabbba)
⇒ bbbbabbbbbaabb

Referenced by [32].

[21] aabbbbabbbabbba=bbbbabbbabbba

Overlap of [17] aabbbabbbbabb=babbbbbaabbba with [11] babbbbbabbbabbba=bbabbbbbabbba:

aabbbabbb babb babbbbbabbbabbba

Critical pair: aabbbabbbbbabbbbbabbba=babbbbbaabbbabbbabbbabbba.

Reduce LHS:

[9]aabb(babbbbbabbbb)babbba
[2]⇒ aabbbabbbbb(aba)bbba
[3]⇒ aabb(babbbbbb)abbbbba
[5]⇒ aabbb(abbabb)bbba
⇒ aabbbbabbbabbba

Reduce RHS:

[10]babbbbb(aabbbabbba)bbbabbba
[3]⇒ (babbbbbb)abbbbbaabbbbbabbba
[5]⇒ b(abbabb)bbbaabbbbbabbba
[8]⇒ bbabb(babbbaabb)bbbabbba
[5]⇒ bb(abbabb)babbbabbbabbba
[2]⇒ bbbabbb(aba)bbbabbbabbba
[11]⇒ bbbabbb(babbbbbabbbabbba)
[9]⇒ bb(babbbbbabbbb)babbba
[2]⇒ bbbabbbbb(aba)bbba
[3]⇒ bb(babbbbbb)abbbbba
[5]⇒ bbb(abbabb)bbba
⇒ bbbbabbbabbba

Referenced by [32].

[22] bbabbbbabbbbabbbbba=babbbbbabbba

Overlap of [3] babbbbbb=babb with [19] babbbbabbbabbba=bbabbbbbaabb:

babbbbb b babbbbabbbabbba

Critical pair: babbbbbbbabbbbbaabb=babbabbbbabbbabbba.

Reduce LHS:

[3](babbbbbb)babbbbbaabb
[7]⇒ (babbbabbbb)baabb
[2]⇒ babbb(aba)abb
[5]⇒ babbbb(abbabb)
⇒ babbbbbabbba

Reduce RHS:

[5]b(abbabb)bbabbbabbba
[5]⇒ bbabbb(abbabb)babbba
[2]⇒ bbabbbbabbb(aba)bbba
⇒ bbabbbbabbbbabbbbba

Flip LHS and RHS.

Referenced by [26], [27], [28].

[23] abbbabbbbbaabb=babbbbabbbbabbbbba

Overlap of [5] abbabb=babbba with [19] babbbbabbbabbba=bbabbbbbaabb:

ab babb babbbbabbbabbba

Critical pair: abbbabbbbbaabb=babbbabbabbbabbba.

Reduce RHS:

[5]babbb(abbabb)babbba
[2]⇒ babbbbabbb(aba)bbba
⇒ babbbbabbbbabbbbba

Referenced by [34].

[24] babbbabbbabbba=bbabbbbbaabbba

Overlap of [19] babbbbabbbabbba=bbabbbbbaabb with [2] aba=babb:

babbbbabbbabbb a aba

Critical pair: babbbbabbbabbbbabb=bbabbbbbaabbba.

Reduce LHS:

[7]babbb(babbbabbbb)abb
[8]⇒ babbb(babbbaabb)
⇒ babbbabbbabbba

Referenced by [31], [32], [36], [37], [38], [39].

[25] babbbbbaabbbbba=bbbabbbabbba

Overlap of [19] babbbbabbbabbba=bbabbbbbaabb with [8] babbbaabb=abbbabbba:

babbbbabb babbba babbbaabb

Critical pair: babbbbabbabbbabbba=bbabbbbbaabbabb.

Reduce LHS:

[5]babbbb(abbabb)babbba
[2]⇒ babbbbbabbb(aba)bbba
[9]⇒ (babbbbbabbbb)abbbbba
⇒ babbbbbaabbbbba

Reduce RHS:

[5]bbabbbbba(abbabb)
[2]⇒ bbabbbbb(aba)bbba
[3]⇒ b(babbbbbb)abbbbba
[5]⇒ bb(abbabb)bbba
⇒ bbbabbbabbba

Defines rule #20.

Referenced by [26], [27], [28].

[26] bbbbbabbbbabbbbba=babbbbabbbbba

Overlap of [19] babbbbabbbabbba=bbabbbbbaabb with [8] babbbaabb=abbbabbba:

babbbbabbbabb ba babbbaabb

Critical pair: babbbbabbbabbabbbabbba=bbabbbbbaabbbbbaabb.

Reduce LHS:

[5]babbbbabbb(abbabb)babbba
[2]⇒ babbbbabbbbabbb(aba)bbba
[22]⇒ babb(bbabbbbabbbbabbbbba)
[7]⇒ (babbbabbbb)babbba
[2]⇒ babbb(aba)bbba
⇒ babbbbabbbbba

Reduce RHS:

[25]b(babbbbbaabbbbba)abb
[8]⇒ bbbbabb(babbbaabb)
[5]⇒ bbbb(abbabb)babbba
[2]⇒ bbbbbabbb(aba)bbba
⇒ bbbbbabbbbabbbbba

Flip LHS and RHS.

Defines rule #11.

[27] bbbbbabbbbbabbba=babbbbbabbba

Overlap of [25] babbbbbaabbbbba=bbbabbbabbba with [10] aabbbabbba=babbbbbaabb:

babbbbbaabbbbb a aabbbabbba

Critical pair: babbbbbaabbbbbbabbbbbaabb=bbbabbbabbbaabbbabbba.

Reduce LHS:

[12](babbbbbaabbbbbb)abbbbbaabb
[5]⇒ babbbbba(abbabb)bbbaabb
[8]⇒ babbbbbababb(babbbaabb)
[5]⇒ babbbbbab(abbabb)babbba
[5]⇒ babbbbb(abbabb)bababbba
[3]⇒ (babbbbbb)abbbabababbba
[5]⇒ b(abbabb)babababbba
[2]⇒ bbabbb(aba)bababbba
[2]⇒ bbabbbbabbb(aba)bbba
[22]⇒ (bbabbbbabbbbabbbbba)
⇒ babbbbbabbba

Reduce RHS:

[8]bbbabb(babbbaabb)babbba
[5]⇒ bbb(abbabb)babbbababbba
[2]⇒ bbbbabbb(aba)bbbababbba
[2]⇒ bbbbabbbbabbbbb(aba)bbba
[3]⇒ bbbbabbb(babbbbbb)abbbbba
[5]⇒ bbbbabbbb(abbabb)bbba
[11]⇒ bbb(babbbbbabbbabbba)
⇒ bbbbbabbbbbabbba

Flip LHS and RHS.

Defines rule #10.

[28] bbbbbabbbbbaabb=babbbbbaabb

Overlap of [25] babbbbbaabbbbba=bbbabbbabbba with [17] aabbbabbbbabb=babbbbbaabbba:

babbbbbaabbbbb a aabbbabbbbabb

Critical pair: babbbbbaabbbbbbabbbbbaabbba=bbbabbbabbbaabbbabbbbabb.

Reduce LHS:

[12](babbbbbaabbbbbb)abbbbbaabbba
[5]⇒ babbbbba(abbabb)bbbaabbba
[8]⇒ babbbbbababb(babbbaabb)ba
[5]⇒ babbbbbab(abbabb)babbbaba
[5]⇒ babbbbb(abbabb)bababbbaba
[3]⇒ (babbbbbb)abbbabababbbaba
[5]⇒ b(abbabb)babababbbaba
[2]⇒ bbabbb(aba)bababbbaba
[2]⇒ bbabbbbabbb(aba)bbbaba
[22]⇒ (bbabbbbabbbbabbbbba)ba
[2]⇒ babbbbbabbb(aba)
[9]⇒ (babbbbbabbbb)abb
⇒ babbbbbaabb

Reduce RHS:

[8]bbbabb(babbbaabb)babbbbabb
[5]⇒ bbb(abbabb)babbbababbbbabb
[2]⇒ bbbbabbb(aba)bbbababbbbabb
[2]⇒ bbbbabbbbabbbbb(aba)bbbbabb
[3]⇒ bbbbabbb(babbbbbb)abbbbbbabb
[5]⇒ bbbbabbbb(abbabb)bbbbabb
[7]⇒ bbbbabbbb(babbbabbbb)abb
[8]⇒ bbbbabbbb(babbbaabb)
[19]⇒ bbb(babbbbabbbabbba)
⇒ bbbbbabbbbbaabb

Flip LHS and RHS.

Defines rule #13.

Referenced by [29], [39], [41].

[29] bbbbbbabbbabbba=bbabbbabbba

Overlap of [28] bbbbbabbbbbaabb=babbbbbaabb with [5] abbabb=babbba:

bbbbbabbbbba abb abbabb

Critical pair: bbbbbabbbbbababbba=babbbbbaabbabb.

Reduce LHS:

[2]bbbbbabbbbb(aba)bbba
[3]⇒ bbbb(babbbbbb)abbbbba
[5]⇒ bbbbb(abbabb)bbba
⇒ bbbbbbabbbabbba

Reduce RHS:

[5]babbbbba(abbabb)
[2]⇒ babbbbb(aba)bbba
[3]⇒ (babbbbbb)abbbbba
[5]⇒ b(abbabb)bbba
⇒ bbabbbabbba

Referenced by [30].

[30] bbbbbabbbabbba=babbbabbba

Overlap of [29] bbbbbbabbbabbba=bbabbbabbba with [2] aba=babb:

bbbbbbabbbabbb a aba

Critical pair: bbbbbbabbbabbbbabb=bbabbbabbbaba.

Reduce LHS:

[7]bbbbb(babbbabbbb)abb
[8]⇒ bbbbb(babbbaabb)
⇒ bbbbbabbbabbba

Reduce RHS:

[2]bbabbbabbb(aba)
[7]⇒ b(babbbabbbb)abb
[8]⇒ b(babbbaabb)
⇒ babbbabbba

Referenced by [31], [32].

[31] abbbabbbbbabbba=bbbbabbbbabbbbba

Overlap of [5] abbabb=babbba with [30] bbbbbabbbabbba=babbbabbba:

abba bb bbbbbabbbabbba

Critical pair: abbababbbabbba=babbbabbbabbbabbba.

Reduce LHS:

[2]abb(aba)bbbabbba
⇒ abbbabbbbbabbba

Reduce RHS:

[24](babbbabbbabbba)bbba
[10]⇒ bbabbbbb(aabbbabbba)
[3]⇒ b(babbbbbb)abbbbbaabb
[5]⇒ bb(abbabb)bbbaabb
[8]⇒ bbbabb(babbbaabb)
[5]⇒ bbb(abbabb)babbba
[2]⇒ bbbbabbb(aba)bbba
⇒ bbbbabbbbabbbbba

Defines rule #18.

Referenced by [33].

[32] bbbbabbbabbba=abbbabbba

Overlap of [17] aabbbabbbbabb=babbbbbaabbba with [30] bbbbbabbbabbba=babbbabbba:

aabbbabbbba bb bbbbbabbbabbba

Critical pair: aabbbabbbbababbbabbba=babbbbbaabbbabbbabbbabbba.

Reduce LHS:

[2]aabbbabbbb(aba)bbbabbba
[9]⇒ aabb(babbbbbabbbb)babbba
[2]⇒ aabbbabbbbb(aba)bbba
[3]⇒ aabb(babbbbbb)abbbbba
[5]⇒ aabbb(abbabb)bbba
[21]⇒ (aabbbbabbbabbba)
⇒ bbbbabbbabbba

Reduce RHS:

[24]babbbbbaabb(babbbabbbabbba)
[20]⇒ (babbbbbaabbbbabbbbba)abbba
[5]⇒ bbbbabbbbba(abbabb)ba
[2]⇒ bbbbabbbbb(aba)bbbaba
[3]⇒ bbb(babbbbbb)abbbbbaba
[5]⇒ bbbb(abbabb)bbbaba
[30]⇒ (bbbbbabbbabbba)ba
[2]⇒ babbbabbb(aba)
[7]⇒ (babbbabbbb)abb
[8]⇒ (babbbaabb)
⇒ abbbabbba

Defines rule #9.

Referenced by [35], [36], [39], [41].

[33] abbbbabbbbabbbbba=bbbabbbbbabbba

Overlap of [18] aabbbabbbbbabbba=bbbabbbbbabbba with [31] abbbabbbbbabbba=bbbbabbbbabbbbba:

a abbbabbbbbabbba abbbabbbbbabbba

Critical pair: abbbbabbbbabbbbba=bbbabbbbbabbba.

Defines rule #21.

Referenced by [34].

[34] abbbabbbbbaabb=bbbbabbbbbabbba

Simplify [23] abbbabbbbbaabb=babbbbabbbbabbbbba.

Reduce RHS:

[33]b(abbbbabbbbabbbbba)
⇒ bbbbabbbbbabbba

Defines rule #22.

Referenced by [37], [41].

[35] abbbabbbbabb=bbbabbbabbba

Overlap of [32] bbbbabbbabbba=abbbabbba with [2] aba=babb:

bbbbabbbabbb a aba

Critical pair: bbbbabbbabbbbabb=abbbabbbaba.

Reduce LHS:

[7]bbb(babbbabbbb)abb
[8]⇒ bbb(babbbaabb)
⇒ bbbabbbabbba

Reduce RHS:

[2]abbbabbb(aba)
⇒ abbbabbbbabb

Flip LHS and RHS.

Defines rule #14.

Referenced by [36].

[36] abbbbabbbbbaabb=bbbabbbbbaabbba

Overlap of [35] abbbabbbbabb=bbbabbbabbba with [32] bbbbabbbabbba=abbbabbba:

abbba bbbbabb bbbbabbbabbba

Critical pair: abbbaabbbabbba=bbbabbbabbbababbba.

Reduce LHS:

[10]abbb(aabbbabbba)
⇒ abbbbabbbbbaabb

Reduce RHS:

[2]bbbabbbabbb(aba)bbba
[7]⇒ bb(babbbabbbb)abbbbba
[8]⇒ bb(babbbaabb)bbba
[24]⇒ b(babbbabbbabbba)
⇒ bbbabbbbbaabbba

Defines rule #23.

[37] babbbbabbbbbabbba=bbbbabbbbbaabb

Overlap of [5] abbabb=babbba with [24] babbbabbbabbba=bbabbbbbaabbba:

ab babb babbbabbbabbba

Critical pair: abbbabbbbbaabbba=babbbababbbabbba.

Reduce LHS:

[34](abbbabbbbbaabb)ba
[2]⇒ bbbbabbbbbabbb(aba)
[9]⇒ bbb(babbbbbabbbb)abb
⇒ bbbbabbbbbaabb

Reduce RHS:

[2]babbb(aba)bbbabbba
⇒ babbbbabbbbbabbba

Flip LHS and RHS.

Referenced by [41].

[38] bbabbbbbaabbbbabb=bbabbbbabbbbba

Overlap of [24] babbbabbbabbba=bbabbbbbaabbba with [2] aba=babb:

babbbabbbabbb a aba

Critical pair: babbbabbbabbbbabb=bbabbbbbaabbbaba.

Reduce LHS:

[7]babb(babbbabbbb)abb
[8]⇒ babb(babbbaabb)
[5]⇒ b(abbabb)babbba
[2]⇒ bbabbb(aba)bbba
⇒ bbabbbbabbbbba

Reduce RHS:

[2]bbabbbbbaabbb(aba)
⇒ bbabbbbbaabbbbabb

Flip LHS and RHS.

Referenced by [41].

[39] abbbabbbabbba=babbbbbaabbba

Overlap of [32] bbbbabbbabbba=abbbabbba with [24] babbbabbbabbba=bbabbbbbaabbba:

bbb babbbabbba babbbabbbabbba

Critical pair: bbbbbabbbbbaabbba=abbbabbbabbba.

Reduce LHS:

[28](bbbbbabbbbbaabb)ba
⇒ babbbbbaabbba

Flip LHS and RHS.

Defines rule #17.

Referenced by [40].

[40] babbbbbaabbbbabb=babbbbabbbbba

Overlap of [39] abbbabbbabbba=babbbbbaabbba with [2] aba=babb:

abbbabbbabbb a aba

Critical pair: abbbabbbabbbbabb=babbbbbaabbbaba.

Reduce LHS:

[7]abb(babbbabbbb)abb
[8]⇒ abb(babbbaabb)
[5]⇒ (abbabb)babbba
[2]⇒ babbb(aba)bbba
⇒ babbbbabbbbba

Reduce RHS:

[2]babbbbbaabbb(aba)
⇒ babbbbbaabbbbabb

Flip LHS and RHS.

Defines rule #24.

[41] abbbbabbbbbabbba=bbbabbbbbaabb

Overlap of [34] abbbabbbbbaabb=bbbbabbbbbabbba with [32] bbbbabbbabbba=abbbabbba:

abbbabbbbbaa bb bbbbabbbabbba

Critical pair: abbbabbbbbaaabbbabbba=bbbbabbbbbabbbabbabbbabbba.

Reduce LHS:

[1]abbbabbbbb(aaa)bbbabbba
[32]⇒ abbbab(bbbbabbbabbba)
[2]⇒ abbb(aba)bbbabbba
⇒ abbbbabbbbbabbba

Reduce RHS:

[5]bbbbabbbbbabbb(abbabb)babbba
[9]⇒ bbb(babbbbbabbbb)abbbababbba
[2]⇒ bbbbabbbbbaabbb(aba)bbba
[38]⇒ bb(bbabbbbbaabbbbabb)bbba
[37]⇒ bbb(babbbbabbbbbabbba)
[28]⇒ bb(bbbbbabbbbbaabb)
⇒ bbbabbbbbaabb

Defines rule #19.