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

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

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

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

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