(0 6 3 15 4)(1 18 2)(5 9 7)(8 12 10)(11 21 20 16 13)(14 19 17)
ALLOWS (11/8)-SEQUENCE
1: (0 2 4)
(0)(1 18 2 6 3 15 4)(5 9 7)(8 12 10)(11 21 20 16 13)(14 19 17)
2: (2 15 18)
(0)(1 18 4)(2)(3 15 6)(5 9 7)(8 12 10)(11 21 20 16 13)(14 19 17)
3: (13 20 16)
(0)(1 18 4)(2)(3 15 6)(5 9 7)(8 12 10)(11 21 20)(13)(14 19 17)(16)
4: (14 19 17)
(0)(1 18 4)(2)(3 15 6)(5 9 7)(8 12 10)(11 21 20)(13)(14)(16)(17)(19)