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