Hello everyone, nice to welcome you on our site, this page even has Level 21 answers. I enjoy it =D
Level 21 - ATTARACC
The answer to this puzzle is:
Words: ATTAR, TATAR, CACA, TACT, ACTA, TART, ATT, TAT
Bonus words:
ATTAR, TATAR, CACA, TACT, ACTA, TART, ATT, TAT