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