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