Yes, there are probably many 3 letter words and some 4 letter words here that I haven't added, like Into, for this kind of puzzle I prefer not using 3 letter words as they are just gonna create so many problems with duplicates and are hard to find.
As for longer words, I prefer keeping the hidden message there, so if you find a valid word that doesn't use any of the letters used in the hidden message feel free to tell me!
As for longer words, I prefer keeping the hidden message there, so if you find a valid word that doesn't use any of the letters used in the hidden message feel free to tell me!