could disown
Regular verb: disown - disowned- disowned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could disown
you could disown
he could disown
we could disown
you could disown
they could disown 	I could be disowning
you could be disowning
he could be disowning
we could be disowning
you could be disowning
they could be disowning	I could have disowned
you could have disowned
he could have disowned
we could have disowned
you could have disowned
they could have disowned	I could have been disowning
you could have been disowning
he could have been disowning
we could have been disowning
you could have been disowning
they could have been disowning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not disown
you could not disown
he could not disown
we could not disown
you could not disown
they could not disown 	I could not be disowning
you could not be disowning
he could not be disowning
we could not be disowning
you could not be disowning
they could not be disowning	I could not have disowned
you could not have disowned
he could not have disowned
we could not have disowned
you could not have disowned
they could not have disowned	I could not have been disowning
you could not have been disowning
he could not have been disowning
we could not have been disowning
you could not have been disowning
they could not have been disowning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I disown?
could you disown?
could he disown?
could we disown?
could you disown?
could they disown? 	could I be disowning?
could you be disowning?
could he be disowning?
could we be disowning?
could you be disowning?
could they be disowning? 	could I have disowned?
could you have disowned?
could he have disowned?
could we have disowned?
could you have disowned?
could they have disowned? 	could I have been disowning?
could you have been disowning?
could he have been disowning?
could we have been disowning?
could you have been disowning?
could they have been disowning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not disown?
could you not disown?
could he not disown?
could we not disown?
could you not disown?
could they not disown? 	could I not be disowning?
could you not be disowning?
could he not be disowning?
could we not be disowning?
could you not be disowning?
could they not be disowning? 	could I not have disowned?
could you not have disowned?
could he not have disowned?
could we not have disowned?
could you not have disowned?
could they not have disowned? 	could I not have been disowning?
could you not have been disowning?
could he not have been disowning?
could we not have been disowning?
could you not have been disowning?
could they not have been disowning?