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