Words formed from any letters in cotes, 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

i - cestoi  

l - closet  

a - costae  

d - costed  

v - covets  

y - coyest  

t - octets  

k - socket  

5 letters

b - besot  

y - cosey  

z - cozes  

4 letters

x - oxes   sext  

z - zest  

3 letters

c - sec   cos   cot  

j - joe   jet   jot  

k - oke   kos   tsk  

v - voe   vet  

x - cox   sex   sox  

z - coz