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