can cooperate
Regular verb: cooperate - cooperated- cooperated

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot cooperate
you cannot cooperate
he cannot cooperate
we cannot cooperate
you cannot cooperate
they cannot cooperate 	I cannot be cooperating
you cannot be cooperating
he cannot be cooperating
we cannot be cooperating
you cannot be cooperating
they cannot be cooperating	I cannot have cooperated
you cannot have cooperated
he cannot have cooperated
we cannot have cooperated
you cannot have cooperated
they cannot have cooperated	I cannot have been cooperating
you cannot have been cooperating
he cannot have been cooperating
we cannot have been cooperating
you cannot have been cooperating
they cannot have been cooperating	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not cooperate?
can you not cooperate?
can he not cooperate?
can we not cooperate?
can you not cooperate?
can they not cooperate? 	can I not be cooperating?
can you not be cooperating?
can he not be cooperating?
can we not be cooperating?
can you not be cooperating?
can they not be cooperating? 	can I not have cooperated?
can you not have cooperated?
can he not have cooperated?
can we not have cooperated?
can you not have cooperated?
can they not have cooperated? 	can I not have been cooperating?
can you not have been cooperating?
can he not have been cooperating?
can we not have been cooperating?
can you not have been cooperating?
can they not have been cooperating?