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The given Problem was:
a a a -> b 
b c -> c c a a a a 
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A self-embedding rewrite structure for the given SRS is:
   b c a a c c a c c --(17)-> c c c c a c c a a c c a b c a a c c a c c b a (#160684)
   OC+OC at 19
      OC: b c a a c c a c --(15)-> c c c c a c c a a c c a b c a a c c a b (#36622)
          OC+OC at 16
             OC: b c a a c c a --(13)-> c c c c a c c a a c c a b c a a b (#13320)
                 OC+OC at 9
                    OC: b c a a c c a --(11)-> c c c c a c c a a b c c a a b (#2825)
                        OC+OC at 10
                           OC: b c a a c --(9)-> c c c c a c c a a b b (#981)
                               OC+OC at 5
                                  OC: b c a a c --(7)-> c c c c a b c a b (#187)
                                      OC+OC at 2
                                         OC: b c a a c --(5)-> c c b c c a b (#24)
                                             OC+OC at 3
                                                OC: b c --(2)-> c c b a (#4)
                                                    OC+OC at 2
                                                       OC: b c --(1)-> c c a a a a (#2)
                                                           Rule
                                                       OC: a a a --(1)-> b (#1)
                                                           Rule
                                                OC: a a a c --(3)-> c c a b (#14)
                                                    OC+OC at 3
                                                       OC: a a a c --(2)-> c c a a a a (#3)
                                                           OC+OC at 0
                                                              OC: a a a --(1)-> b (#1)
                                                                  Rule
                                                              OC: b c --(1)-> c c a a a a (#2)
                                                                  Rule
                                                       OC: a a a --(1)-> b (#1)
                                                           Rule
                                         OC: b c --(2)-> c c a b (#5)
                                             OC+OC at 3
                                                OC: b c --(1)-> c c a a a a (#2)
                                                    Rule
                                                OC: a a a --(1)-> b (#1)
                                                    Rule
                                  OC: b c a --(2)-> c c a a b (#6)
                                      OC+OC at 4
                                         OC: b c --(1)-> c c a a a a (#2)
                                             Rule
                                         OC: a a a --(1)-> b (#1)
                                             Rule
                           OC: b c a --(2)-> c c a a b (#6)
                               OC+OC at 4
                                  OC: b c --(1)-> c c a a a a (#2)
                                      Rule
                                  OC: a a a --(1)-> b (#1)
                                      Rule
                    OC: b c --(2)-> c c a b (#5)
                        OC+OC at 3
                           OC: b c --(1)-> c c a a a a (#2)
                               Rule
                           OC: a a a --(1)-> b (#1)
                               Rule
             OC: b c --(2)-> c c a b (#5)
                 OC+OC at 3
                    OC: b c --(1)-> c c a a a a (#2)
                        Rule
                    OC: a a a --(1)-> b (#1)
                        Rule
      OC: b c --(2)-> c c b a (#4)
          OC+OC at 2
             OC: b c --(1)-> c c a a a a (#2)
                 Rule
             OC: a a a --(1)-> b (#1)
                 Rule
Hence, the SRS is non-terminating.