Hello everyone, nice to welcome you on our site, this page even has Level 21 answers. I enjoy it =D
Level 21 - UIFTSTO
The answer to this puzzle is:
Words: OUTSIT, TUFTS, TOITS, FOIST, TOUTS, TOFUS, TOFTS, TOUT, TUFT, TOIT, FITS, OUTS, TOTS, TITS, TUTS, TUT, TOT, OFT, SOU, TIT, ITS, SOT
Bonus words:
OUTSIT, TUFTS, TOITS, FOIST, TOUTS, TOFUS, TOFTS, TOUT, TUFT, TOIT, FITS, OUTS, TOTS, TITS, TUTS, TUT, TOT, OFT, SOU, TIT, ITS, SOT