Fig. 1.

(A) DP matrices (i.e. M, D and I) depicting the only cells computed by the WFA in order to align $q=“\text{GATACA}”$ against $t=“\text{GAGATA}”$ using the penalties $\{x=4,o=6,e=2\}$. The arrows show the f.r. points of the main diagonal in matrix M (i.e. ${\tilde{M}}_{0,0},\hspace{0.17em}{\tilde{M}}_{4,0}$ and ${\tilde{M}}_{8,0}$). (B) Equivalent representation using wavefronts (i.e. WF₀, WF₄ and WF₈)