Filed substitution with awk

guys,

I'm trying to 9k lines of the following:

aaa aaa 1 1 1

to

aaa aaa 1 01 1

Im pretty ignorant when it comes to subtituting fields using awk
any help ?

Tony

try:

awk '{print $1 " " $2 " " $3 " 0" $4 " " $5}' t.txt