Hello everyone, nice to welcome you on our site, this page even has Level 4 answers. I enjoy it =D
Level 4 - EALPOR
The answer to this puzzle is:
Words: POLER, PAROL, PAREO, PALER, LOPER, PROLE, PARLE, POLE, ROPE, LEAR, APER, REPO, REAP, RAPE, PORE, ALOE, AERO, PEAL, OPAL, EARL, LEAP, LOPE, LORE, PARE, ORE, OLE, REP, OAR, ROE, POL, PRO, LOP, PAR, LEA, PAL, RAP, ARE, LAP, APE
Bonus words:
POLER, PAROL, PAREO, PALER, LOPER, PROLE, PARLE, POLE, ROPE, LEAR, APER, REPO, REAP, RAPE, PORE, ALOE, AERO, PEAL, OPAL, EARL, LEAP, LOPE, LORE, PARE, ORE, OLE, REP, OAR, ROE, POL, PRO, LOP, PAR, LEA, PAL, RAP, ARE, LAP, APE