This program searches for words that has some (pre|suf|in)fix common
with a specific word (given by the user).
House rule: The word you type in must be at least 5 characters.
E.g. Try "kjellerstrand" (my last name). One word meld is
contro-llers-trand (controllers). The word in parenthesis
("controllers") is thus melded with "kjellerstrand" (or part of it). The
dashes ("-") is used to separate the different parts ("controller"
and "-llerstrand") from each other.