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

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

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

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

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