MAYBE

Problem:
 b(a(b(b(b(b(x1)))))) -> a(b(b(b(b(b(a(x1)))))))

Proof:
 Complexity Transformation Processor:
  strict:
   b(a(b(b(b(b(x1)))))) -> a(b(b(b(b(b(a(x1)))))))
  weak:
   
  Open