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

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

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

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

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