YES
Input TRS:
      1: b(a(a(x1))) -> a(b(c(x1)))
      2: c(a(x1)) -> a(c(x1))
      3: b(c(a(x1))) -> a(b(c(x1)))
      4: c(b(x1)) -> b(a(x1))
      5: a(c(b(x1))) -> c(b(a(x1)))
Number of strict rules: 5
Direct POLO(bPol) ... removes: 4 1 3 5 2
      a 	w: 2 * x1 + 21241
      b 	w: 2 * x1 + 21244
      c 	w: 2 * x1 + 21239
Number of strict rules: 0