YES
Input TRS:
      1: a(a(x1)) -> b(b(b(x1)))
      2: b(b(x1)) -> c(c(c(x1)))
      3: c(c(c(c(x1)))) -> a(b(x1))
Number of strict rules: 3
Direct POLO(bPol) ... removes: 1 3 2
      a 	w: x1 + 26
      b 	w: x1 + 17
      c 	w: x1 + 11
Number of strict rules: 0