English verb conjugation
MUST COOPERATE

Regular verb: cooperate - cooperated - cooperated

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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