I could employ you could employ he could employ we could employ you could employ they could employ
V-ing form
I could be employing you could be employing he could be employing we could be employing you could be employing they could be employing
Perfect
I could have employed you could have employed he could have employed we could have employed you could have employed they could have employed
V-ing perfect
I could have been employing you could have been employing he could have been employing we could have been employing you could have been employing they could have been employing
Negation
Simple form
I could not employ you could not employ he could not employ we could not employ you could not employ they could not employ
V-ing form
I could not be employing you could not be employing he could not be employing we could not be employing you could not be employing they could not be employing
Perfect
I could not have employed you could not have employed he could not have employed we could not have employed you could not have employed they could not have employed
V-ing perfect
I could not have been employing you could not have been employing he could not have been employing we could not have been employing you could not have been employing they could not have been employing
Interrogative form
Simple form
could I employ? could you employ? could he employ? could we employ? could you employ? could they employ?
V-ing form
could I be employing? could you be employing? could he be employing? could we be employing? could you be employing? could they be employing?
Perfect
could I have employed? could you have employed? could he have employed? could we have employed? could you have employed? could they have employed?
V-ing perfect
could I have been employing? could you have been employing? could he have been employing? could we have been employing? could you have been employing? could they have been employing?
Interro-negative form
Simple form
could I not employ? could you not employ? could he not employ? could we not employ? could you not employ? could they not employ?
V-ing form
could I not be employing? could you not be employing? could he not be employing? could we not be employing? could you not be employing? could they not be employing?
Perfect
could I not have employed? could you not have employed? could he not have employed? could we not have employed? could you not have employed? could they not have employed?
V-ing perfect
could I not have been employing? could you not have been employing? could he not have been employing? could we not have been employing? could you not have been employing? could they not have been employing?