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

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

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

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

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