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

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

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

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

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