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