YES
(ignored inputs)COMMENT the following rules are removed from the original TRS a1 ( ) -> b1 ( ) a1 ( ) -> c1 ( ) b1 ( ) -> b2 ( ) c1 ( ) -> c2 ( ) a2 ( ) -> b2 ( ) a2 ( ) -> c2 ( ) b2 ( ) -> b3 ( ) c2 ( ) -> c3 ( ) a3 ( ) -> b3 ( ) a3 ( ) -> c3 ( ) b3 ( ) -> b4 ( ) c3 ( ) -> c4 ( ) a4 ( ) -> b4 ( ) a4 ( ) -> c4 ( ) b4 ( ) -> b5 ( ) c4 ( ) -> c5 ( ) a5 ( ) -> b6 ( ) b5 ( ) -> b6 ( ) c5 ( ) -> b6 ( )
: CR

Combined result: CR
/tmp/fileqMXaAC.trs: Success(CR)
(0 msec.)