Hello everyone, nice to welcome you on our site, this page even has Level 4 answers. I enjoy it =D
Level 4 - YNLKUEIL
The answer to this puzzle is:
Words: INKLE, NELLY, LINKY, KELLY, KNELL, LINEY, LIKEN, KILN, INKY, LUNE, LUNY, YILL, LINY, INLY, ILLY, YULE, LIEU, LIEN, KILL, KEN, YEN, YIN, NIL, LYE, LEI, YUK, ILK, LIN, ELK
Bonus words:
INKLE, NELLY, LINKY, KELLY, KNELL, LINEY, LIKEN, KILN, INKY, LUNE, LUNY, YILL, LINY, INLY, ILLY, YULE, LIEU, LIEN, KILL, KEN, YEN, YIN, NIL, LYE, LEI, YUK, ILK, LIN, ELK