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

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

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

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

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