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