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