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

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

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

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

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