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