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

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

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

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

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