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

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

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

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

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