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

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

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

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

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