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

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

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

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

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