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

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

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

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

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