must cooperate
Verbo regular: cooperate - cooperated- cooperated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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?