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

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

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

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

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