I have a text file
<code>a, b
c, d
e, f
g, h
i, j
etc
</code>
<code>a, b
c, d
e, f
g, h
i, j
etc
</code>
a, b
c, d
e, f
g, h
i, j
etc
I need the following file using VIM at every N line. Here, I use N=2
<code>a, b
c, d
1
e, f
g, h
2
i, j
etc
</code>
<code>a, b
c, d
1
e, f
g, h
2
i, j
etc
</code>
a, b
c, d
1
e, f
g, h
2
i, j
etc
Is there any way in VIM?