MAYBE

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

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