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

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

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

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

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