One syllable words:
* see
* bee
* tree
* free
* knee
* flee
* glee
* sheep
* deep
Two syllable words:
* street
* meet
* feet
* sleep
* weep
* greet
* keep
* feel
* peel
* wheel
* steel
*
Three or more syllable words:
* believe
* achieve
* receive
* relieve
* conceive
* retrieve
*
*
This is not an exhaustive list, but it gives you a good starting point.