English verb conjugation
COULD COOPER STH

Regular verb: cooper sth - cooper sthed - cooper sthed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could cooper sth you could cooper sth he could cooper sth we could cooper sth you could cooper sth they could cooper sth	I could be cooper sthing you could be cooper sthing he could be cooper sthing we could be cooper sthing you could be cooper sthing they could be cooper sthing
Perfect	V-ing perfect
I could have cooper sthed you could have cooper sthed he could have cooper sthed we could have cooper sthed you could have cooper sthed they could have cooper sthed	I could have been cooper sthing you could have been cooper sthing he could have been cooper sthing we could have been cooper sthing you could have been cooper sthing they could have been cooper sthing

Negation

Simple form	V-ing form
I could not cooper sth you could not cooper sth he could not cooper sth we could not cooper sth you could not cooper sth they could not cooper sth	I could not be cooper sthing you could not be cooper sthing he could not be cooper sthing we could not be cooper sthing you could not be cooper sthing they could not be cooper sthing
Perfect	V-ing perfect
I could not have cooper sthed you could not have cooper sthed he could not have cooper sthed we could not have cooper sthed you could not have cooper sthed they could not have cooper sthed	I could not have been cooper sthing you could not have been cooper sthing he could not have been cooper sthing we could not have been cooper sthing you could not have been cooper sthing they could not have been cooper sthing

Interrogative form

Simple form	V-ing form
could I cooper sth? could you cooper sth? could he cooper sth? could we cooper sth? could you cooper sth? could they cooper sth?	could I be cooper sthing? could you be cooper sthing? could he be cooper sthing? could we be cooper sthing? could you be cooper sthing? could they be cooper sthing?
Perfect	V-ing perfect
could I have cooper sthed? could you have cooper sthed? could he have cooper sthed? could we have cooper sthed? could you have cooper sthed? could they have cooper sthed?	could I have been cooper sthing? could you have been cooper sthing? could he have been cooper sthing? could we have been cooper sthing? could you have been cooper sthing? could they have been cooper sthing?

Interro-negative form

Simple form	V-ing form
could I not cooper sth? could you not cooper sth? could he not cooper sth? could we not cooper sth? could you not cooper sth? could they not cooper sth?	could I not be cooper sthing? could you not be cooper sthing? could he not be cooper sthing? could we not be cooper sthing? could you not be cooper sthing? could they not be cooper sthing?
Perfect	V-ing perfect
could I not have cooper sthed? could you not have cooper sthed? could he not have cooper sthed? could we not have cooper sthed? could you not have cooper sthed? could they not have cooper sthed?	could I not have been cooper sthing? could you not have been cooper sthing? could he not have been cooper sthing? could we not have been cooper sthing? could you not have been cooper sthing? could they not have been cooper sthing?