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

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

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

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

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