If you are going to try making number lines in ASCII, please do them first in Notepad (or whatever) in a non-proportionally spaced font (e.g. courier) then put the "code" codes around the text when you post it here:
[code]
.pp p p p p p p
00000000011111111112
12345678901234567890
[/code]
...gives...
Code:
.pp p p p p p p
00000000011111111112
12345678901234567890
(It puts the stuff in a non proportionally spaced font and stops whitespace being compressed.)