MAYBE
Input TRS:
      1: a(a(b(b(x1)))) -> b(b(c(c(a(a(x1))))))
      2: b(b(c(c(x1)))) -> c(c(b(b(b(b(x1))))))
      3: a(a(c(c(x1)))) -> c(c(a(a(b(b(x1))))))
Number of strict rules: 3
Direct POLO(bPol) ... failed.
Uncurrying ... failed.
Dependency Pairs:
     #1: #b(b(c(c(x1)))) -> #b(b(b(b(x1))))
     #2: #b(b(c(c(x1)))) -> #b(b(b(x1)))
     #3: #b(b(c(c(x1)))) -> #b(b(x1))
     #4: #b(b(c(c(x1)))) -> #b(x1)
     #5: #a(a(c(c(x1)))) -> #a(a(b(b(x1))))
     #6: #a(a(c(c(x1)))) -> #a(b(b(x1)))
     #7: #a(a(c(c(x1)))) -> #b(b(x1))
     #8: #a(a(c(c(x1)))) -> #b(x1)
     #9: #a(a(b(b(x1)))) -> #b(b(c(c(a(a(x1))))))
     #10: #a(a(b(b(x1)))) -> #b(c(c(a(a(x1)))))
     #11: #a(a(b(b(x1)))) -> #a(a(x1))
     #12: #a(a(b(b(x1)))) -> #a(x1)
Number of SCCs: 2, DPs: 7
  SCC { #5 #11 #12 }
POLO(Sum)... succeeded.
      a 	w: x1 + 20163
      b 	w: x1
      c 	w: x1
      #a 	w: x1
      #b 	w: 0
    USABLE RULES: { 1..3 }
    Removed DPs: #12
Number of SCCs: 2, DPs: 6
  SCC { #5 #11 }
POLO(Sum)... POLO(max)... QLPOS... POLO(mSum)... QWPOpS(mSum)... Mat2b... failed.
Finding a loop...  failed.