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