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