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