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