(0 18 2)(1 21 19 5 3)(4 8 6)(7 11 9)(10 16 14 13 12)(15 20 17)
ALLOWS (11/8)-SEQUENCE
1: (1 4 8)

(0 18 2)(1 6 4 21 19 5 3)(7 11 9)(8)(10 16 14 13 12)(15 20 17)
2: (3 19 5)

(0 18 2)(1 6 4 21 19)(3)(5)(7 11 9)(8)(10 16 14 13 12)(15 20 17)
3: (0 18 2)

(0)(1 6 4 21 19)(2)(3)(5)(7 11 9)(8)(10 16 14 13 12)(15 20 17)(18)
4: (4 21 6)

(0)(1 6 19)(2)(3)(4)(5)(7 11 9)(8)(10 16 14 13 12)(15 20 17)(18)(21)