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