Hello everyone, nice to welcome you on our site, this page even has Level 12 answers. I enjoy it =D
Level 12 - GNIICPR
The answer to this puzzle is:
Words: RIPING, RICING, PIING, ICING, IRING, GIRN, PRIG, PIC, NIP, CIG, GIN
Bonus words:
RIPING, RICING, PIING, ICING, IRING, GIRN, PRIG, PIC, NIP, CIG, GIN