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