#222 aabaaababa=babaaa
Original presentation
\( \left\langle a, b \;\middle|\; a^{2} b a^{3} b a b a = b a b a^{3} \right\rangle \)
Modified presentation
\( \left\langle a, b, c, d \;\middle|\; a^{2} c a^{2} c^{2} = c^{2} a^{2},\; c = b a,\; d = a b a \right\rangle \)
Complete rewriting system
Using recursive path order (RPOCmp) with \(a < d < b < c\):
\( \begin{aligned} c &\rightarrow b a \\ a b a &\rightarrow d \\ b d a^{2} &\rightarrow a d a d b a \\ a b d &\rightarrow d b a \\ b d a d &\rightarrow a d a d b d \\ d b a^{2} d &\rightarrow a^{2} d a d b d \\ d b a^{3} &\rightarrow a^{2} d a d b a \end{aligned} \)