Words formed from any letters in stabs, plus optional blank

The value of the blank, or of an existing letter already on the game board, is shown at the start of each line.

6 letters

l - blasts  

5 letters

f - fasts  

m - masts  

v - vasts  

4 letters

f - fast   fats  

j - jabs  

q - qats  

3 letters

f - fas   aft   fat  

j - jab   taj  

q - qat  

v - vas   tav   vat  

x - sax   tax