YES After renaming modulo { 1->0, 2->1, 0->2, L->3, R->4 }, it remains to prove termination of the 8-rule system { 0 1 0 -> 1 2 1 , 2 1 0 -> 0 2 1 , 3 1 0 -> 3 0 2 1 , 0 1 2 -> 1 2 0 , 0 1 4 -> 1 2 0 4 , 2 1 2 -> 0 2 0 , 3 1 2 -> 3 0 2 0 , 2 1 4 -> 0 2 0 4 } The system was reversed. After renaming modulo { 0->0, 1->1, 2->2, 3->3, 4->4 }, it remains to prove termination of the 8-rule system { 0 1 0 -> 1 2 1 , 0 1 2 -> 1 2 0 , 0 1 3 -> 1 2 0 3 , 2 1 0 -> 0 2 1 , 4 1 0 -> 4 0 2 1 , 2 1 2 -> 0 2 0 , 2 1 3 -> 0 2 0 3 , 4 1 2 -> 4 0 2 0 } Applying the dependency pairs transformation. After renaming modulo { (0,true)->0, (1,false)->1, (0,false)->2, (2,true)->3, (2,false)->4, (3,false)->5, (4,true)->6, (4,false)->7 }, it remains to prove termination of the 28-rule system { 0 1 2 -> 3 1 , 0 1 4 -> 3 2 , 0 1 4 -> 0 , 0 1 5 -> 3 2 5 , 0 1 5 -> 0 5 , 3 1 2 -> 0 4 1 , 3 1 2 -> 3 1 , 6 1 2 -> 6 2 4 1 , 6 1 2 -> 0 4 1 , 6 1 2 -> 3 1 , 3 1 4 -> 0 4 2 , 3 1 4 -> 3 2 , 3 1 4 -> 0 , 3 1 5 -> 0 4 2 5 , 3 1 5 -> 3 2 5 , 3 1 5 -> 0 5 , 6 1 4 -> 6 2 4 2 , 6 1 4 -> 0 4 2 , 6 1 4 -> 3 2 , 6 1 4 -> 0 , 2 1 2 ->= 1 4 1 , 2 1 4 ->= 1 4 2 , 2 1 5 ->= 1 4 2 5 , 4 1 2 ->= 2 4 1 , 7 1 2 ->= 7 2 4 1 , 4 1 4 ->= 2 4 2 , 4 1 5 ->= 2 4 2 5 , 7 1 4 ->= 7 2 4 2 } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 2: 0 is interpreted by / \ | 1 0 | | 0 1 | \ / 1 is interpreted by / \ | 1 0 | | 0 1 | \ / 2 is interpreted by / \ | 1 0 | | 0 1 | \ / 3 is interpreted by / \ | 1 0 | | 0 1 | \ / 4 is interpreted by / \ | 1 0 | | 0 1 | \ / 5 is interpreted by / \ | 1 1 | | 0 1 | \ / 6 is interpreted by / \ | 1 1 | | 0 1 | \ / 7 is interpreted by / \ | 1 1 | | 0 1 | \ / After renaming modulo { 0->0, 1->1, 2->2, 3->3, 4->4, 5->5, 6->6, 7->7 }, it remains to prove termination of the 23-rule system { 0 1 2 -> 3 1 , 0 1 4 -> 3 2 , 0 1 4 -> 0 , 0 1 5 -> 3 2 5 , 0 1 5 -> 0 5 , 3 1 2 -> 0 4 1 , 3 1 2 -> 3 1 , 6 1 2 -> 6 2 4 1 , 3 1 4 -> 0 4 2 , 3 1 4 -> 3 2 , 3 1 4 -> 0 , 3 1 5 -> 0 4 2 5 , 3 1 5 -> 3 2 5 , 3 1 5 -> 0 5 , 6 1 4 -> 6 2 4 2 , 2 1 2 ->= 1 4 1 , 2 1 4 ->= 1 4 2 , 2 1 5 ->= 1 4 2 5 , 4 1 2 ->= 2 4 1 , 7 1 2 ->= 7 2 4 1 , 4 1 4 ->= 2 4 2 , 4 1 5 ->= 2 4 2 5 , 7 1 4 ->= 7 2 4 2 } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 2: 0 is interpreted by / \ | 1 0 | | 0 1 | \ / 1 is interpreted by / \ | 1 2 | | 0 1 | \ / 2 is interpreted by / \ | 1 1 | | 0 1 | \ / 3 is interpreted by / \ | 1 0 | | 0 1 | \ / 4 is interpreted by / \ | 1 0 | | 0 1 | \ / 5 is interpreted by / \ | 1 0 | | 0 1 | \ / 6 is interpreted by / \ | 1 0 | | 0 1 | \ / 7 is interpreted by / \ | 1 0 | | 0 1 | \ / After renaming modulo { 6->0, 1->1, 2->2, 4->3, 5->4, 7->5 }, it remains to prove termination of the 10-rule system { 0 1 2 -> 0 2 3 1 , 0 1 3 -> 0 2 3 2 , 2 1 2 ->= 1 3 1 , 2 1 3 ->= 1 3 2 , 2 1 4 ->= 1 3 2 4 , 3 1 2 ->= 2 3 1 , 5 1 2 ->= 5 2 3 1 , 3 1 3 ->= 2 3 2 , 3 1 4 ->= 2 3 2 4 , 5 1 3 ->= 5 2 3 2 } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 6: 0 is interpreted by / \ | 1 0 1 0 0 0 | | 0 1 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | \ / 1 is interpreted by / \ | 1 0 0 0 0 0 | | 0 1 0 0 0 0 | | 0 0 0 1 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 1 | | 0 0 0 0 0 0 | \ / 2 is interpreted by / \ | 1 0 0 0 0 0 | | 0 1 0 0 0 0 | | 0 0 1 0 1 0 | | 0 1 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | \ / 3 is interpreted by / \ | 1 0 0 0 0 0 | | 0 1 0 0 0 0 | | 0 0 0 0 0 0 | | 0 1 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | \ / 4 is interpreted by / \ | 1 0 0 0 0 0 | | 0 1 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | | 0 1 0 0 0 0 | \ / 5 is interpreted by / \ | 1 0 0 0 0 0 | | 0 1 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | | 0 0 0 0 0 0 | \ / After renaming modulo { 2->0, 1->1, 3->2, 4->3, 5->4 }, it remains to prove termination of the 8-rule system { 0 1 0 ->= 1 2 1 , 0 1 2 ->= 1 2 0 , 0 1 3 ->= 1 2 0 3 , 2 1 0 ->= 0 2 1 , 4 1 0 ->= 4 0 2 1 , 2 1 2 ->= 0 2 0 , 2 1 3 ->= 0 2 0 3 , 4 1 2 ->= 4 0 2 0 } The system is trivially terminating.