could cooperate
Verbo regular: cooperate - cooperated- cooperated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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?