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

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

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

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

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