use '?' for JOKER (blank)

From letters V, I, S, I, T, S  I made following words

6 letter words

visits[9]

5 letter words

visit[8]

4 letter words

sits[4]

3 letter words

vis[6], sis[3], its[3], sit[3], tis[3]

2 letter words

is[2], si[2], it[2], ti[2]