Hello everyone, nice to welcome you on our site, this page even has Level 4 answers. I enjoy it =D
Level 4 - CPAKECO
The answer to this puzzle is:
Words: COPECK, ACOCK, COCA, COPE, POKE, CAPO, POCK, CECA, COCK, ACE, PEC
Bonus words:
COPECK, ACOCK, COCA, COPE, POKE, CAPO, POCK, CECA, COCK, ACE, PEC