You can find the full set of valid words that can be produced from the letters in STREE.
Words You Can Make from STREE
3-letter words
- ERE3
- ERS3
- ERT3
- EST3
- REE3
- RES3
- RET3
- SEE3
- SER3
- SET3
- TEE3
- TES3
4-letter words
- ERST4
- REST4
- RETE4
- RETS4
- SEER4
- SERE4
- TEES4
- TREE4
5-letter words
- ESTER5
- REEST5
- RESET5
- STEER5
- STERE5
- STREE5
- TERSE5
- TREES5
The list above contains all words you can make from STREE sorted by length. In total, it yields 28 valid words.