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

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

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

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

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