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