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

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

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

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

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