Hello everyone, nice to welcome you on our site, this page even has Level 4 answers. I enjoy it =D
Level 4 - OLYERRPP
The answer to this puzzle is:
Words: PYRROLE, LOPPER, POPERY, PYROPE, PROPYL, PROPEL, PYRROL, ROPERY, LOPPY, PROLE, LORRY, ROPER, REPRO, POLYP, POLER, PRYER, LOPER, PLYER, PREOP, ROPEY, PERRY, YORE, PERP, PYRE, ROPY, LOPE, OYER, REPO, YELP, POLE, PLOP, LORE, PORE, POPE, PYRO, LYRE, RELY, PREP, PRO, POP, REP, YEP, PEP, ROE, LOP, LYE, PRY, PLY, OLE, ERR, POL, RYE
Bonus words:
PYRROLE, LOPPER, POPERY, PYROPE, PROPYL, PROPEL, PYRROL, ROPERY, LOPPY, PROLE, LORRY, ROPER, REPRO, POLYP, POLER, PRYER, LOPER, PLYER, PREOP, ROPEY, PERRY, YORE, PERP, PYRE, ROPY, LOPE, OYER, REPO, YELP, POLE, PLOP, LORE, PORE, POPE, PYRO, LYRE, RELY, PREP, PRO, POP, REP, YEP, PEP, ROE, LOP, LYE, PRY, PLY, OLE, ERR, POL, RYE