could release
Regular verb: release - released- released

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could release
you could release
she could release
we could release
you could release
they could release 	I could be releasing
you could be releasing
she could be releasing
we could be releasing
you could be releasing
they could be releasing	I could have released
you could have released
she could have released
we could have released
you could have released
they could have released	I could have been releasing
you could have been releasing
she could have been releasing
we could have been releasing
you could have been releasing
they could have been releasing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not release
you could not release
she could not release
we could not release
you could not release
they could not release 	I could not be releasing
you could not be releasing
she could not be releasing
we could not be releasing
you could not be releasing
they could not be releasing	I could not have released
you could not have released
she could not have released
we could not have released
you could not have released
they could not have released	I could not have been releasing
you could not have been releasing
she could not have been releasing
we could not have been releasing
you could not have been releasing
they could not have been releasing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I release?
could you release?
could she release?
could we release?
could you release?
could they release? 	could I be releasing?
could you be releasing?
could she be releasing?
could we be releasing?
could you be releasing?
could they be releasing? 	could I have released?
could you have released?
could she have released?
could we have released?
could you have released?
could they have released? 	could I have been releasing?
could you have been releasing?
could she have been releasing?
could we have been releasing?
could you have been releasing?
could they have been releasing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not release?
could you not release?
could she not release?
could we not release?
could you not release?
could they not release? 	could I not be releasing?
could you not be releasing?
could she not be releasing?
could we not be releasing?
could you not be releasing?
could they not be releasing? 	could I not have released?
could you not have released?
could she not have released?
could we not have released?
could you not have released?
could they not have released? 	could I not have been releasing?
could you not have been releasing?
could she not have been releasing?
could we not have been releasing?
could you not have been releasing?
could they not have been releasing?