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

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

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

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

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