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 couldn't disown
you couldn't disown
he couldn't disown
we couldn't disown
you couldn't disown
they couldn't disown 	I couldn't be disowning
you couldn't be disowning
he couldn't be disowning
we couldn't be disowning
you couldn't be disowning
they couldn't be disowning	I couldn't have disowned
you couldn't have disowned
he couldn't have disowned
we couldn't have disowned
you couldn't have disowned
they couldn't have disowned	I couldn't have been disowning
you couldn't have been disowning
he couldn't have been disowning
we couldn't have been disowning
you couldn't have been disowning
they couldn't 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 	
couldn't I disown?
couldn't you disown?
couldn't he disown?
couldn't we disown?
couldn't you disown?
couldn't they disown? 	couldn't I be disowning?
couldn't you be disowning?
couldn't he be disowning?
couldn't we be disowning?
couldn't you be disowning?
couldn't they be disowning? 	couldn't I have disowned?
couldn't you have disowned?
couldn't he have disowned?
couldn't we have disowned?
couldn't you have disowned?
couldn't they have disowned? 	couldn't I have been disowning?
couldn't you have been disowning?
couldn't he have been disowning?
couldn't we have been disowning?
couldn't you have been disowning?
couldn't they have been disowning?