English verb conjugation
COULD COOPERATE

Regular verb: cooperate - cooperated - cooperated

Affirmation

Simple form	V-ing form
I could cooperate you could cooperate she could cooperate we could cooperate you could cooperate they could cooperate	I could be cooperating you could be cooperating she could be cooperating we could be cooperating you could be cooperating they could be cooperating
Perfect	V-ing perfect
I could have cooperated you could have cooperated she could have cooperated we could have cooperated you could have cooperated they could have cooperated	I could have been cooperating you could have been cooperating she could have been cooperating we could have been cooperating you could have been cooperating they could have been cooperating

Negation

Simple form	V-ing form
I couldn't cooperate you couldn't cooperate she couldn't cooperate we couldn't cooperate you couldn't cooperate they couldn't cooperate	I couldn't be cooperating you couldn't be cooperating she couldn't be cooperating we couldn't be cooperating you couldn't be cooperating they couldn't be cooperating
Perfect	V-ing perfect
I couldn't have cooperated you couldn't have cooperated she couldn't have cooperated we couldn't have cooperated you couldn't have cooperated they couldn't have cooperated	I couldn't have been cooperating you couldn't have been cooperating she couldn't have been cooperating we couldn't have been cooperating you couldn't have been cooperating they couldn't have been cooperating

Interrogative form

Simple form	V-ing form
could I cooperate? could you cooperate? could she cooperate? could we cooperate? could you cooperate? could they cooperate?	could I be cooperating? could you be cooperating? could she be cooperating? could we be cooperating? could you be cooperating? could they be cooperating?
Perfect	V-ing perfect
could I have cooperated? could you have cooperated? could she have cooperated? could we have cooperated? could you have cooperated? could they have cooperated?	could I have been cooperating? could you have been cooperating? could she have been cooperating? could we have been cooperating? could you have been cooperating? could they have been cooperating?

Interro-negative form

Simple form	V-ing form
couldn't I cooperate? couldn't you cooperate? couldn't she cooperate? couldn't we cooperate? couldn't you cooperate? couldn't they cooperate?	couldn't I be cooperating? couldn't you be cooperating? couldn't she be cooperating? couldn't we be cooperating? couldn't you be cooperating? couldn't they be cooperating?
Perfect	V-ing perfect
couldn't I have cooperated? couldn't you have cooperated? couldn't she have cooperated? couldn't we have cooperated? couldn't you have cooperated? couldn't they have cooperated?	couldn't I have been cooperating? couldn't you have been cooperating? couldn't she have been cooperating? couldn't we have been cooperating? couldn't you have been cooperating? couldn't they have been cooperating?