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

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

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

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

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