"All occureces" program

[dkaip]

Hello, i have a difficult problem.

I am trying to make an algorithm that make all occurences of string
Supose we have a word, for example "and"
Then we have a list of string objects...

Ob1=a
Ob2=nd
Ob3=an

How i can find all of replacemen occurences?

Ob1 Ob2
Ob1 n d
Ob2 d
............

There is a known method?

Thank's

Jim