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

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

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

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

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