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