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

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

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

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

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