Hello everyone, nice to welcome you on our site, this page even has Level 10 answers. I enjoy it =D
Level 10 - ROPCPE
The answer to this puzzle is:
Words: COPER, PREOP, PERP, PREP, CERO, REPO, PEC, ROE, COR, COP, ORE, REP, PEP, REC, PRO
Bonus words:
COPER, PREOP, PERP, PREP, CERO, REPO, PEC, ROE, COR, COP, ORE, REP, PEP, REC, PRO