Hello everyone, nice to welcome you on our site, this page even has Level 4 answers. I enjoy it =D
Level 4 - CETROTP
The answer to this puzzle is:
Words: POTTER, COPTER, COTTER, OCTET, RECTO, CREPT, TORTE, TROPE, REPOT, COPER, TOTER, TOPER, ROTTE, PETTO, TOPE, CERO, TORC, ROTE, REPO, TROT, TORT, TORE, COTE, TROP, TOTE, PET, TOE, ORE, COT, PER, TOP, ETC, OPT, COR, TOT, REP, TOR, PEC, POT, COP, ROE, REC
Bonus words:
POTTER, COPTER, COTTER, OCTET, RECTO, CREPT, TORTE, TROPE, REPOT, COPER, TOTER, TOPER, ROTTE, PETTO, TOPE, CERO, TORC, ROTE, REPO, TROT, TORT, TORE, COTE, TROP, TOTE, PET, TOE, ORE, COT, PER, TOP, ETC, OPT, COR, TOT, REP, TOR, PEC, POT, COP, ROE, REC