Hello everyone, nice to welcome you on our site, this page even has Level 4 answers. I enjoy it =D
Level 4 - OGPINRGU
The answer to this puzzle is:
Words: GROPING, UPGOING, INGROUP, PURGING, ROGUING, ROUGING, ROUPING, URPING, GRINGO, PORING, INPOUR, GORING, PROGUN, ROPING, URGING, PRONG, OPING, GIRON, ORPIN, PIROG, PRION, UNRIG, UNRIP, PURIN, GIPON, RUING, PINGO, GUIRO, INRO, PRIG, GRIG, GORP, GROG, NORI, PURI, PION, RUNG, NOIR, GIRN, PORN, GIRO, PROG, UPON, GNU, OUR, GIN, RUN, RUG, PRO, GIG, ION, NOG, NIP, PUN, URN, PUG, POI, GUN, RIG, PIU, PIN, RIP, NOR
Bonus words:
GROPING, UPGOING, INGROUP, PURGING, ROGUING, ROUGING, ROUPING, URPING, GRINGO, PORING, INPOUR, GORING, PROGUN, ROPING, URGING, PRONG, OPING, GIRON, ORPIN, PIROG, PRION, UNRIG, UNRIP, PURIN, GIPON, RUING, PINGO, GUIRO, INRO, PRIG, GRIG, GORP, GROG, NORI, PURI, PION, RUNG, NOIR, GIRN, PORN, GIRO, PROG, UPON, GNU, OUR, GIN, RUN, RUG, PRO, GIG, ION, NOG, NIP, PUN, URN, PUG, POI, GUN, RIG, PIU, PIN, RIP, NOR