Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could hairy you could hairy she could hairy we could hairy you could hairy they could hairy
V-ing form
I could be hairying you could be hairying she could be hairying we could be hairying you could be hairying they could be hairying
Perfect
I could have hairied you could have hairied she could have hairied we could have hairied you could have hairied they could have hairied
V-ing perfect
I could have been hairying you could have been hairying she could have been hairying we could have been hairying you could have been hairying they could have been hairying
Negation
Simple form
I could not hairy you could not hairy she could not hairy we could not hairy you could not hairy they could not hairy
V-ing form
I could not be hairying you could not be hairying she could not be hairying we could not be hairying you could not be hairying they could not be hairying
Perfect
I could not have hairied you could not have hairied she could not have hairied we could not have hairied you could not have hairied they could not have hairied
V-ing perfect
I could not have been hairying you could not have been hairying she could not have been hairying we could not have been hairying you could not have been hairying they could not have been hairying
Interrogative form
Simple form
could I hairy? could you hairy? could she hairy? could we hairy? could you hairy? could they hairy?
V-ing form
could I be hairying? could you be hairying? could she be hairying? could we be hairying? could you be hairying? could they be hairying?
Perfect
could I have hairied? could you have hairied? could she have hairied? could we have hairied? could you have hairied? could they have hairied?
V-ing perfect
could I have been hairying? could you have been hairying? could she have been hairying? could we have been hairying? could you have been hairying? could they have been hairying?
Interro-negative form
Simple form
could I not hairy? could you not hairy? could she not hairy? could we not hairy? could you not hairy? could they not hairy?
V-ing form
could I not be hairying? could you not be hairying? could she not be hairying? could we not be hairying? could you not be hairying? could they not be hairying?
Perfect
could I not have hairied? could you not have hairied? could she not have hairied? could we not have hairied? could you not have hairied? could they not have hairied?
V-ing perfect
could I not have been hairying? could you not have been hairying? could she not have been hairying? could we not have been hairying? could you not have been hairying? could they not have been hairying?