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