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

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

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

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

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