Figure 4.

Partial lexicographic orderings. Partial lexicographic orderings of a set X of 9-mers with respect to the index sets $I_0^{\mathsf{\text{cnt}}}=\left\{0,1,2\right\}$, $I_1^{\mathsf{\text{cnt}}}=\left\{3,4,5\right\}$, and $I_2^{\mathsf{\text{cnt}}}=\left\{6,7,8\right\}$. Red dotted lines indicate equivalence blocks.