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

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

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

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

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