(0 19 8)(1 18 3)(2 9 4)(5 13 10)(6 16 7)(11 20 15)(12 17 14)
ALLOWS (11/8)-SEQUENCE
1: (6 16 17)
(0 19 8)(1 18 3)(2 9 4)(5 13 10)(6 14 12 17 7)(11 20 15)(16)
2: (7 12 17)
(0 19 8)(1 18 3)(2 9 4)(5 13 10)(6 14 12)(7)(11 20 15)(16)(17)
3: (11 20 15)
(0 19 8)(1 18 3)(2 9 4)(5 13 10)(6 14 12)(7)(11)(15)(16)(17)(20)
4: (0 19 8)
(0)(1 18 3)(2 9 4)(5 13 10)(6 14 12)(7)(8)(11)(15)(16)(17)(19)(20)