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