Hello everyone, nice to welcome you on our site, this page even has Level 4 answers. I enjoy it =D
Level 4 - TRNIA
The answer to this puzzle is:
Words: RIANT, TAIN, RANI, TARN, IRAN, AIRN, AIRT, ANI, NIT, ART, RAT, AIR, RAN, TAR, ANT
Bonus words:
RIANT, TAIN, RANI, TARN, IRAN, AIRN, AIRT, ANI, NIT, ART, RAT, AIR, RAN, TAR, ANT