6 letter word: H I G T S L

3 letter words
Git
His
Hit
Its
Lit
Sit

4 letter words
Gilt
Gist
Gits
Hilt
Hist (a word used to alert someone. "Hist, someone comes!)
Hits
List
Sigh
Silt
Slit
This

5 letter words
Gilts
Hilts
Light
Sight

6 letter words
Lights
Slight