3-letter words:
* ale
* ant
* apt
* eat
* elm
* end
* ent
* lee
* let
* pan
* pen
* tan
* ten
4-letter words:
* elan
* lent
* neat
* pelt
* teal
5-letter words:
* elate
* plane
6-letter words:
* elephant
7-letter words:
* enplane
Note: This list only includes words that are found in a standard dictionary. There are other combinations of letters that can be formed, but they may not be considered real words.