English verb conjugation
COULD RELEASE

Regular verb: release - released - released

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I couldn't release you couldn't release she couldn't release we couldn't release you couldn't release they couldn't release	I couldn't be releasing you couldn't be releasing she couldn't be releasing we couldn't be releasing you couldn't be releasing they couldn't be releasing
Perfect	V-ing perfect
I couldn't have released you couldn't have released she couldn't have released we couldn't have released you couldn't have released they couldn't have released	I couldn't have been releasing you couldn't have been releasing she couldn't have been releasing we couldn't have been releasing you couldn't have been releasing they couldn't have been releasing

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
couldn't I release? couldn't you release? couldn't she release? couldn't we release? couldn't you release? couldn't they release?	couldn't I be releasing? couldn't you be releasing? couldn't she be releasing? couldn't we be releasing? couldn't you be releasing? couldn't they be releasing?
Perfect	V-ing perfect
couldn't I have released? couldn't you have released? couldn't she have released? couldn't we have released? couldn't you have released? couldn't they have released?	couldn't I have been releasing? couldn't you have been releasing? couldn't she have been releasing? couldn't we have been releasing? couldn't you have been releasing? couldn't they have been releasing?