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

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

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

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

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