Hello everyone, nice to welcome you on our site, this page even has Level 4 answers. I enjoy it =D
Level 4 - PMOSSUO
The answer to this puzzle is:
Words: OSMOUS, MOSSO, SUMOS, SUMPS, SOUPS, POMOS, OOPS, POMS, MOPS, MOOS, SUMP, UMPS, MUSS, PUSS, SOUS, SUMS, UMP, PUS, POO, SOU, UPS, SUP, POM, OPS, MOS, SOP, MOO, MUS
Bonus words:
OSMOUS, MOSSO, SUMOS, SUMPS, SOUPS, POMOS, OOPS, POMS, MOPS, MOOS, SUMP, UMPS, MUSS, PUSS, SOUS, SUMS, UMP, PUS, POO, SOU, UPS, SUP, POM, OPS, MOS, SOP, MOO, MUS