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