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