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

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

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

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

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