MAYBE

Problem:
 p(p(b(a(x0)),x1),p(x2,x3)) -> p(p(x3,a(x2)),p(b(a(x1)),b(x0)))

Proof:
 Complexity Transformation Processor:
  strict:
   p(p(b(a(x0)),x1),p(x2,x3)) -> p(p(x3,a(x2)),p(b(a(x1)),b(x0)))
  weak:
   
  Open