Two-letter words:
* an
* in
* on
Three-letter words:
* and
* die
* don
* end
* ion
* lea
* lie
* nil
* nod
Four-letter words:
* deal
* dine
* done
* lean
* line
* lone
* nail
* neat
* none
* ode
Five-letter words:
* alien
* alone
* laden
* lane
* lead
* lion
* ordeal
Six-letter words:
* dealin
Seven-letter words:
* delion
This is not an exhaustive list, and depending on how strict you are about word definitions, you could likely find more words. For example, you could argue that "dean" is a valid word using the letters in "dandelion."
Let me know if you'd like to try another word challenge!