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

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

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

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

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