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

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

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

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

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