Editing Needleman–Wunsch algorithm (section)

===Constructing the grid===
First construct a grid such as one shown in Figure 1 above. Start the first string in the top of the third column and start the other string at the start of the third row. Fill out the rest of the column and row headers as in Figure 1. There should be no numbers in the grid yet.

{| class="wikitable"
|-
!|  ||   || G || C || A || T || G || C || G
|-
! scope="row" |
| &nbsp; ||  ||  ||  ||  ||  ||  ||
|-
! scope="row" | G
|  ||   ||   ||   ||   ||   ||   || 
|-
! scope="row" | A
|  ||   ||   ||   ||   ||   ||   || 
|-
! scope="row" | T
|  ||   ||   ||   ||   ||   ||   ||  
|-
! scope="row" | T
|  ||   ||   ||   ||   ||   ||   || 
|-
! scope="row" | A
|  ||   ||   ||   ||   ||   ||   || 
|-
! scope="row" | C
|  ||   ||   ||   ||   ||   ||   || 
|-
! scope="row" | A
|  ||   ||   ||   ||   ||   ||   || 
|}