YES After renaming modulo { a->0, b->1, c->2 }, it remains to prove termination of the 4-rule system { 0 -> , 0 1 -> 2 1 2 1 0 , 1 -> 0 , 2 2 -> } Applying sparse 2-tiling [Hofbauer/Geser/Waldmann, FSCD 2019]. After renaming modulo { (0,0)->0, (0,1)->1, (0,2)->2, (0,4)->3, (1,0)->4, (1,1)->5, (1,2)->6, (1,4)->7, (2,0)->8, (2,1)->9, (2,2)->10, (2,4)->11, (3,0)->12, (3,1)->13, (3,2)->14, (3,4)->15 }, it remains to prove termination of the 64-rule system { 0 0 -> 0 , 0 1 -> 1 , 0 2 -> 2 , 0 3 -> 3 , 4 0 -> 4 , 4 1 -> 5 , 4 2 -> 6 , 4 3 -> 7 , 8 0 -> 8 , 8 1 -> 9 , 8 2 -> 10 , 8 3 -> 11 , 12 0 -> 12 , 12 1 -> 13 , 12 2 -> 14 , 12 3 -> 15 , 0 1 4 -> 2 9 6 9 4 0 , 0 1 5 -> 2 9 6 9 4 1 , 0 1 6 -> 2 9 6 9 4 2 , 0 1 7 -> 2 9 6 9 4 3 , 4 1 4 -> 6 9 6 9 4 0 , 4 1 5 -> 6 9 6 9 4 1 , 4 1 6 -> 6 9 6 9 4 2 , 4 1 7 -> 6 9 6 9 4 3 , 8 1 4 -> 10 9 6 9 4 0 , 8 1 5 -> 10 9 6 9 4 1 , 8 1 6 -> 10 9 6 9 4 2 , 8 1 7 -> 10 9 6 9 4 3 , 12 1 4 -> 14 9 6 9 4 0 , 12 1 5 -> 14 9 6 9 4 1 , 12 1 6 -> 14 9 6 9 4 2 , 12 1 7 -> 14 9 6 9 4 3 , 1 4 -> 0 0 , 1 5 -> 0 1 , 1 6 -> 0 2 , 1 7 -> 0 3 , 5 4 -> 4 0 , 5 5 -> 4 1 , 5 6 -> 4 2 , 5 7 -> 4 3 , 9 4 -> 8 0 , 9 5 -> 8 1 , 9 6 -> 8 2 , 9 7 -> 8 3 , 13 4 -> 12 0 , 13 5 -> 12 1 , 13 6 -> 12 2 , 13 7 -> 12 3 , 2 10 8 -> 0 , 2 10 9 -> 1 , 2 10 10 -> 2 , 2 10 11 -> 3 , 6 10 8 -> 4 , 6 10 9 -> 5 , 6 10 10 -> 6 , 6 10 11 -> 7 , 10 10 8 -> 8 , 10 10 9 -> 9 , 10 10 10 -> 10 , 10 10 11 -> 11 , 14 10 8 -> 12 , 14 10 9 -> 13 , 14 10 10 -> 14 , 14 10 11 -> 15 } 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 4 | | 0 1 | \ / 2 is interpreted by / \ | 1 2 | | 0 1 | \ / 3 is interpreted by / \ | 1 1 | | 0 1 | \ / 4 is interpreted by / \ | 1 0 | | 0 1 | \ / 5 is interpreted by / \ | 1 4 | | 0 1 | \ / 6 is interpreted by / \ | 1 2 | | 0 1 | \ / 7 is interpreted by / \ | 1 1 | | 0 1 | \ / 8 is interpreted by / \ | 1 0 | | 0 1 | \ / 9 is interpreted by / \ | 1 0 | | 0 1 | \ / 10 is interpreted by / \ | 1 2 | | 0 1 | \ / 11 is interpreted by / \ | 1 0 | | 0 1 | \ / 12 is interpreted by / \ | 1 0 | | 0 1 | \ / 13 is interpreted by / \ | 1 1 | | 0 1 | \ / 14 is interpreted by / \ | 1 0 | | 0 1 | \ / 15 is interpreted by / \ | 1 0 | | 0 1 | \ / After renaming modulo { 0->0, 1->1, 2->2, 3->3, 4->4, 5->5, 6->6, 7->7, 8->8, 10->9, 12->10, 9->11 }, it remains to prove termination of the 29-rule system { 0 0 -> 0 , 0 1 -> 1 , 0 2 -> 2 , 0 3 -> 3 , 4 0 -> 4 , 4 1 -> 5 , 4 2 -> 6 , 4 3 -> 7 , 8 0 -> 8 , 8 2 -> 9 , 10 0 -> 10 , 0 1 4 -> 2 11 6 11 4 0 , 0 1 5 -> 2 11 6 11 4 1 , 0 1 6 -> 2 11 6 11 4 2 , 0 1 7 -> 2 11 6 11 4 3 , 4 1 4 -> 6 11 6 11 4 0 , 4 1 5 -> 6 11 6 11 4 1 , 4 1 6 -> 6 11 6 11 4 2 , 4 1 7 -> 6 11 6 11 4 3 , 8 1 4 -> 9 11 6 11 4 0 , 8 1 5 -> 9 11 6 11 4 1 , 8 1 6 -> 9 11 6 11 4 2 , 8 1 7 -> 9 11 6 11 4 3 , 11 4 -> 8 0 , 11 5 -> 8 1 , 11 6 -> 8 2 , 11 7 -> 8 3 , 2 9 11 -> 1 , 6 9 11 -> 5 } Applying the dependency pairs transformation. After renaming modulo { (0,true)->0, (0,false)->1, (2,false)->2, (2,true)->3, (4,true)->4, (6,true)->5, (8,true)->6, (10,true)->7, (1,false)->8, (4,false)->9, (11,false)->10, (6,false)->11, (11,true)->12, (5,false)->13, (7,false)->14, (3,false)->15, (8,false)->16, (9,false)->17, (10,false)->18 }, it remains to prove termination of the 103-rule system { 0 1 -> 0 , 0 2 -> 3 , 4 1 -> 4 , 4 2 -> 5 , 6 1 -> 6 , 7 1 -> 7 , 0 8 9 -> 3 10 11 10 9 1 , 0 8 9 -> 12 11 10 9 1 , 0 8 9 -> 5 10 9 1 , 0 8 9 -> 12 9 1 , 0 8 9 -> 4 1 , 0 8 9 -> 0 , 0 8 13 -> 3 10 11 10 9 8 , 0 8 13 -> 12 11 10 9 8 , 0 8 13 -> 5 10 9 8 , 0 8 13 -> 12 9 8 , 0 8 13 -> 4 8 , 0 8 11 -> 3 10 11 10 9 2 , 0 8 11 -> 12 11 10 9 2 , 0 8 11 -> 5 10 9 2 , 0 8 11 -> 12 9 2 , 0 8 11 -> 4 2 , 0 8 11 -> 3 , 0 8 14 -> 3 10 11 10 9 15 , 0 8 14 -> 12 11 10 9 15 , 0 8 14 -> 5 10 9 15 , 0 8 14 -> 12 9 15 , 0 8 14 -> 4 15 , 4 8 9 -> 5 10 11 10 9 1 , 4 8 9 -> 12 11 10 9 1 , 4 8 9 -> 5 10 9 1 , 4 8 9 -> 12 9 1 , 4 8 9 -> 4 1 , 4 8 9 -> 0 , 4 8 13 -> 5 10 11 10 9 8 , 4 8 13 -> 12 11 10 9 8 , 4 8 13 -> 5 10 9 8 , 4 8 13 -> 12 9 8 , 4 8 13 -> 4 8 , 4 8 11 -> 5 10 11 10 9 2 , 4 8 11 -> 12 11 10 9 2 , 4 8 11 -> 5 10 9 2 , 4 8 11 -> 12 9 2 , 4 8 11 -> 4 2 , 4 8 11 -> 3 , 4 8 14 -> 5 10 11 10 9 15 , 4 8 14 -> 12 11 10 9 15 , 4 8 14 -> 5 10 9 15 , 4 8 14 -> 12 9 15 , 4 8 14 -> 4 15 , 6 8 9 -> 12 11 10 9 1 , 6 8 9 -> 5 10 9 1 , 6 8 9 -> 12 9 1 , 6 8 9 -> 4 1 , 6 8 9 -> 0 , 6 8 13 -> 12 11 10 9 8 , 6 8 13 -> 5 10 9 8 , 6 8 13 -> 12 9 8 , 6 8 13 -> 4 8 , 6 8 11 -> 12 11 10 9 2 , 6 8 11 -> 5 10 9 2 , 6 8 11 -> 12 9 2 , 6 8 11 -> 4 2 , 6 8 11 -> 3 , 6 8 14 -> 12 11 10 9 15 , 6 8 14 -> 5 10 9 15 , 6 8 14 -> 12 9 15 , 6 8 14 -> 4 15 , 12 9 -> 6 1 , 12 9 -> 0 , 12 13 -> 6 8 , 12 11 -> 6 2 , 12 11 -> 3 , 12 14 -> 6 15 , 1 1 ->= 1 , 1 8 ->= 8 , 1 2 ->= 2 , 1 15 ->= 15 , 9 1 ->= 9 , 9 8 ->= 13 , 9 2 ->= 11 , 9 15 ->= 14 , 16 1 ->= 16 , 16 2 ->= 17 , 18 1 ->= 18 , 1 8 9 ->= 2 10 11 10 9 1 , 1 8 13 ->= 2 10 11 10 9 8 , 1 8 11 ->= 2 10 11 10 9 2 , 1 8 14 ->= 2 10 11 10 9 15 , 9 8 9 ->= 11 10 11 10 9 1 , 9 8 13 ->= 11 10 11 10 9 8 , 9 8 11 ->= 11 10 11 10 9 2 , 9 8 14 ->= 11 10 11 10 9 15 , 16 8 9 ->= 17 10 11 10 9 1 , 16 8 13 ->= 17 10 11 10 9 8 , 16 8 11 ->= 17 10 11 10 9 2 , 16 8 14 ->= 17 10 11 10 9 15 , 10 9 ->= 16 1 , 10 13 ->= 16 8 , 10 11 ->= 16 2 , 10 14 ->= 16 15 , 2 17 10 ->= 8 , 11 17 10 ->= 13 } 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 2 | | 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 | \ / 8 is interpreted by / \ | 1 4 | | 0 1 | \ / 9 is interpreted by / \ | 1 0 | | 0 1 | \ / 10 is interpreted by / \ | 1 0 | | 0 1 | \ / 11 is interpreted by / \ | 1 2 | | 0 1 | \ / 12 is interpreted by / \ | 1 1 | | 0 1 | \ / 13 is interpreted by / \ | 1 4 | | 0 1 | \ / 14 is interpreted by / \ | 1 0 | | 0 1 | \ / 15 is interpreted by / \ | 1 0 | | 0 1 | \ / 16 is interpreted by / \ | 1 0 | | 0 1 | \ / 17 is interpreted by / \ | 1 2 | | 0 1 | \ / 18 is interpreted by / \ | 1 0 | | 0 1 | \ / After renaming modulo { 0->0, 1->1, 4->2, 6->3, 7->4, 8->5, 2->6, 15->7, 9->8, 13->9, 11->10, 14->11, 16->12, 17->13, 18->14, 10->15 }, it remains to prove termination of the 33-rule system { 0 1 -> 0 , 2 1 -> 2 , 3 1 -> 3 , 4 1 -> 4 , 1 1 ->= 1 , 1 5 ->= 5 , 1 6 ->= 6 , 1 7 ->= 7 , 8 1 ->= 8 , 8 5 ->= 9 , 8 6 ->= 10 , 8 7 ->= 11 , 12 1 ->= 12 , 12 6 ->= 13 , 14 1 ->= 14 , 1 5 8 ->= 6 15 10 15 8 1 , 1 5 9 ->= 6 15 10 15 8 5 , 1 5 10 ->= 6 15 10 15 8 6 , 1 5 11 ->= 6 15 10 15 8 7 , 8 5 8 ->= 10 15 10 15 8 1 , 8 5 9 ->= 10 15 10 15 8 5 , 8 5 10 ->= 10 15 10 15 8 6 , 8 5 11 ->= 10 15 10 15 8 7 , 12 5 8 ->= 13 15 10 15 8 1 , 12 5 9 ->= 13 15 10 15 8 5 , 12 5 10 ->= 13 15 10 15 8 6 , 12 5 11 ->= 13 15 10 15 8 7 , 15 8 ->= 12 1 , 15 9 ->= 12 5 , 15 10 ->= 12 6 , 15 11 ->= 12 7 , 6 13 15 ->= 5 , 10 13 15 ->= 9 } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 3: 0 is interpreted by / \ | 1 0 1 | | 0 1 0 | | 0 0 0 | \ / 1 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 1 1 | \ / 2 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 3 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 4 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 5 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 6 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 7 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 8 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 9 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 10 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 11 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 12 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 13 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 14 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 15 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / After renaming modulo { 2->0, 1->1, 3->2, 4->3, 5->4, 6->5, 7->6, 8->7, 9->8, 10->9, 11->10, 12->11, 13->12, 14->13, 15->14 }, it remains to prove termination of the 32-rule system { 0 1 -> 0 , 2 1 -> 2 , 3 1 -> 3 , 1 1 ->= 1 , 1 4 ->= 4 , 1 5 ->= 5 , 1 6 ->= 6 , 7 1 ->= 7 , 7 4 ->= 8 , 7 5 ->= 9 , 7 6 ->= 10 , 11 1 ->= 11 , 11 5 ->= 12 , 13 1 ->= 13 , 1 4 7 ->= 5 14 9 14 7 1 , 1 4 8 ->= 5 14 9 14 7 4 , 1 4 9 ->= 5 14 9 14 7 5 , 1 4 10 ->= 5 14 9 14 7 6 , 7 4 7 ->= 9 14 9 14 7 1 , 7 4 8 ->= 9 14 9 14 7 4 , 7 4 9 ->= 9 14 9 14 7 5 , 7 4 10 ->= 9 14 9 14 7 6 , 11 4 7 ->= 12 14 9 14 7 1 , 11 4 8 ->= 12 14 9 14 7 4 , 11 4 9 ->= 12 14 9 14 7 5 , 11 4 10 ->= 12 14 9 14 7 6 , 14 7 ->= 11 1 , 14 8 ->= 11 4 , 14 9 ->= 11 5 , 14 10 ->= 11 6 , 5 12 14 ->= 4 , 9 12 14 ->= 8 } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 3: 0 is interpreted by / \ | 1 0 1 | | 0 1 0 | | 0 0 0 | \ / 1 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 1 1 | \ / 2 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 3 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 4 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 5 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 6 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 7 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 8 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 9 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 10 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 11 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 12 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 13 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 14 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / After renaming modulo { 2->0, 1->1, 3->2, 4->3, 5->4, 6->5, 7->6, 8->7, 9->8, 10->9, 11->10, 12->11, 13->12, 14->13 }, it remains to prove termination of the 31-rule system { 0 1 -> 0 , 2 1 -> 2 , 1 1 ->= 1 , 1 3 ->= 3 , 1 4 ->= 4 , 1 5 ->= 5 , 6 1 ->= 6 , 6 3 ->= 7 , 6 4 ->= 8 , 6 5 ->= 9 , 10 1 ->= 10 , 10 4 ->= 11 , 12 1 ->= 12 , 1 3 6 ->= 4 13 8 13 6 1 , 1 3 7 ->= 4 13 8 13 6 3 , 1 3 8 ->= 4 13 8 13 6 4 , 1 3 9 ->= 4 13 8 13 6 5 , 6 3 6 ->= 8 13 8 13 6 1 , 6 3 7 ->= 8 13 8 13 6 3 , 6 3 8 ->= 8 13 8 13 6 4 , 6 3 9 ->= 8 13 8 13 6 5 , 10 3 6 ->= 11 13 8 13 6 1 , 10 3 7 ->= 11 13 8 13 6 3 , 10 3 8 ->= 11 13 8 13 6 4 , 10 3 9 ->= 11 13 8 13 6 5 , 13 6 ->= 10 1 , 13 7 ->= 10 3 , 13 8 ->= 10 4 , 13 9 ->= 10 5 , 4 11 13 ->= 3 , 8 11 13 ->= 7 } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 3: 0 is interpreted by / \ | 1 0 1 | | 0 1 0 | | 0 0 0 | \ / 1 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 1 1 | \ / 2 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 3 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 4 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 5 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 6 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 7 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 8 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 9 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 10 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 11 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 12 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 13 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / After renaming modulo { 2->0, 1->1, 3->2, 4->3, 5->4, 6->5, 7->6, 8->7, 9->8, 10->9, 11->10, 12->11, 13->12 }, it remains to prove termination of the 30-rule system { 0 1 -> 0 , 1 1 ->= 1 , 1 2 ->= 2 , 1 3 ->= 3 , 1 4 ->= 4 , 5 1 ->= 5 , 5 2 ->= 6 , 5 3 ->= 7 , 5 4 ->= 8 , 9 1 ->= 9 , 9 3 ->= 10 , 11 1 ->= 11 , 1 2 5 ->= 3 12 7 12 5 1 , 1 2 6 ->= 3 12 7 12 5 2 , 1 2 7 ->= 3 12 7 12 5 3 , 1 2 8 ->= 3 12 7 12 5 4 , 5 2 5 ->= 7 12 7 12 5 1 , 5 2 6 ->= 7 12 7 12 5 2 , 5 2 7 ->= 7 12 7 12 5 3 , 5 2 8 ->= 7 12 7 12 5 4 , 9 2 5 ->= 10 12 7 12 5 1 , 9 2 6 ->= 10 12 7 12 5 2 , 9 2 7 ->= 10 12 7 12 5 3 , 9 2 8 ->= 10 12 7 12 5 4 , 12 5 ->= 9 1 , 12 6 ->= 9 2 , 12 7 ->= 9 3 , 12 8 ->= 9 4 , 3 10 12 ->= 2 , 7 10 12 ->= 6 } The system was filtered by the following matrix interpretation of type E_J with J = {1,...,2} and dimension 3: 0 is interpreted by / \ | 1 0 1 | | 0 1 0 | | 0 0 0 | \ / 1 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 1 1 | \ / 2 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 3 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 4 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 5 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 6 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 7 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 8 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 9 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 10 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 11 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / 12 is interpreted by / \ | 1 0 0 | | 0 1 0 | | 0 0 0 | \ / After renaming modulo { 1->0, 2->1, 3->2, 4->3, 5->4, 6->5, 7->6, 8->7, 9->8, 10->9, 11->10, 12->11 }, it remains to prove termination of the 29-rule system { 0 0 ->= 0 , 0 1 ->= 1 , 0 2 ->= 2 , 0 3 ->= 3 , 4 0 ->= 4 , 4 1 ->= 5 , 4 2 ->= 6 , 4 3 ->= 7 , 8 0 ->= 8 , 8 2 ->= 9 , 10 0 ->= 10 , 0 1 4 ->= 2 11 6 11 4 0 , 0 1 5 ->= 2 11 6 11 4 1 , 0 1 6 ->= 2 11 6 11 4 2 , 0 1 7 ->= 2 11 6 11 4 3 , 4 1 4 ->= 6 11 6 11 4 0 , 4 1 5 ->= 6 11 6 11 4 1 , 4 1 6 ->= 6 11 6 11 4 2 , 4 1 7 ->= 6 11 6 11 4 3 , 8 1 4 ->= 9 11 6 11 4 0 , 8 1 5 ->= 9 11 6 11 4 1 , 8 1 6 ->= 9 11 6 11 4 2 , 8 1 7 ->= 9 11 6 11 4 3 , 11 4 ->= 8 0 , 11 5 ->= 8 1 , 11 6 ->= 8 2 , 11 7 ->= 8 3 , 2 9 11 ->= 1 , 6 9 11 ->= 5 } The system is trivially terminating.