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

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

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

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

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