Add Column To Left

i am having one excel spreadsheet where there are data in matrix of 365 rows X n columns. columns are not fixed.(but will always be less than 125). now i want to add blank column after every column through VBA

e.g.
a--b--c--d--e (these are columns)
date--scrip1--scrip2--scrip3--scrip4
now i want data to be rearrange as

a--b--c--d--e--f--g--h--i
date--scrip1--<blank>--scrip2--<blank>--scrip3--<blank>--scrip4--<blank>

means one blank column after every scrip idea is to calculate %return in that new added blank column