could interrupt
Regular verb: interrupt - interrupted- interrupted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could interrupt
you could interrupt
she could interrupt
we could interrupt
you could interrupt
they could interrupt 	I could be interrupting
you could be interrupting
she could be interrupting
we could be interrupting
you could be interrupting
they could be interrupting	I could have interrupted
you could have interrupted
she could have interrupted
we could have interrupted
you could have interrupted
they could have interrupted	I could have been interrupting
you could have been interrupting
she could have been interrupting
we could have been interrupting
you could have been interrupting
they could have been interrupting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't interrupt
you couldn't interrupt
she couldn't interrupt
we couldn't interrupt
you couldn't interrupt
they couldn't interrupt 	I couldn't be interrupting
you couldn't be interrupting
she couldn't be interrupting
we couldn't be interrupting
you couldn't be interrupting
they couldn't be interrupting	I couldn't have interrupted
you couldn't have interrupted
she couldn't have interrupted
we couldn't have interrupted
you couldn't have interrupted
they couldn't have interrupted	I couldn't have been interrupting
you couldn't have been interrupting
she couldn't have been interrupting
we couldn't have been interrupting
you couldn't have been interrupting
they couldn't have been interrupting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I interrupt?
could you interrupt?
could she interrupt?
could we interrupt?
could you interrupt?
could they interrupt? 	could I be interrupting?
could you be interrupting?
could she be interrupting?
could we be interrupting?
could you be interrupting?
could they be interrupting? 	could I have interrupted?
could you have interrupted?
could she have interrupted?
could we have interrupted?
could you have interrupted?
could they have interrupted? 	could I have been interrupting?
could you have been interrupting?
could she have been interrupting?
could we have been interrupting?
could you have been interrupting?
could they have been interrupting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I interrupt?
couldn't you interrupt?
couldn't she interrupt?
couldn't we interrupt?
couldn't you interrupt?
couldn't they interrupt? 	couldn't I be interrupting?
couldn't you be interrupting?
couldn't she be interrupting?
couldn't we be interrupting?
couldn't you be interrupting?
couldn't they be interrupting? 	couldn't I have interrupted?
couldn't you have interrupted?
couldn't she have interrupted?
couldn't we have interrupted?
couldn't you have interrupted?
couldn't they have interrupted? 	couldn't I have been interrupting?
couldn't you have been interrupting?
couldn't she have been interrupting?
couldn't we have been interrupting?
couldn't you have been interrupting?
couldn't they have been interrupting?