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

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

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

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

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