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

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

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

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

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