English verb conjugation
COULD COOPERATE

Regular verb: cooperate - cooperated - cooperated

Affirmation

Simple form	V-ing form
I could cooperate you could cooperate he could cooperate we could cooperate you could cooperate they could cooperate	I could be cooperating you could be cooperating he 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 he 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 he 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 he 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 he 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 he 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 he 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 he cooperate? could we cooperate? could you cooperate? could they cooperate?	could I be cooperating? could you be cooperating? could he 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 he 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 he 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 he 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 he 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 he 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 he have been cooperating? couldn't we have been cooperating? couldn't you have been cooperating? couldn't they have been cooperating?