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

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

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

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

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