editing very long line, many columns in vim

I need to edit a file having columns and need help

1       0       0       0       1       1       0       0       1       1       1       1       
1       1       0       1       0       0       0       1       0       0       0       0             
1       0       0       0       1       1       0       0       1       1       1       1       
1       1       0       1       0       0       0       1       0       0 

      0       0        

it is a portion of file.

what I want is to add some comments on top of it, and then after every two line add a label e.g:

Z A B C D E F
MMSSSS
#A
1       0       0       0       1                 
1       1       0       1       0                
#B
1       0       0       0       1       
1       1       0       1       0     

how can I do it in vim as I have 400 columns's line and when I open vim each row is spread accross many lines of screen.