in reply to combinations between words!
"This and that and the other" from "this and that the other"? if allowed and the program is written correctly, it should loop forever ;)
To put it another way and to expose the unknowns more thoroughly, you need to specify whether order of the words matters (yes=permutation no=combination) and whether words may repeat (yes=something two orders of magnitude more complicated than either!)
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^M Free your mind!
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