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

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

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

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

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