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

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

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

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

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