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

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

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

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

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