Words formed from any letters in corset, 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.

7 letters

n - cornets  

t - cotters  

i - erotics  

r - rectors  

6 letters

g - ergots  

5 letters

4 letters

x - oxes   sext  

z - zero   zest  

3 letters

j - joe   jet   jot  

v - voe   rev   vet  

z - coz