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