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

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

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

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

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