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

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

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

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

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