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

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

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

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

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