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

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

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

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

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