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

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

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

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

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