Hello everyone, nice to welcome you on our site, this page even has Level 1 answers. I enjoy it =D
Level 1 - IMTPOMU
The answer to this puzzle is:
Words: TOPI, MOMI, MUMP, PTUI, PIU, UMP, POM, MOT, POI, TOM
Bonus words:
TOPI, MOMI, MUMP, PTUI, PIU, UMP, POM, MOT, POI, TOM