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

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

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

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

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