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

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

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

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

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