can interrogate
Regular verb: interrogate - interrogated- interrogated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can interrogate
you can interrogate
he can interrogate
we can interrogate
you can interrogate
they can interrogate 	I can be interrogating
you can be interrogating
he can be interrogating
we can be interrogating
you can be interrogating
they can be interrogating	I can have interrogated
you can have interrogated
he can have interrogated
we can have interrogated
you can have interrogated
they can have interrogated	I can have been interrogating
you can have been interrogating
he can have been interrogating
we can have been interrogating
you can have been interrogating
they can have been interrogating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot interrogate
you cannot interrogate
he cannot interrogate
we cannot interrogate
you cannot interrogate
they cannot interrogate 	I cannot be interrogating
you cannot be interrogating
he cannot be interrogating
we cannot be interrogating
you cannot be interrogating
they cannot be interrogating	I cannot have interrogated
you cannot have interrogated
he cannot have interrogated
we cannot have interrogated
you cannot have interrogated
they cannot have interrogated	I cannot have been interrogating
you cannot have been interrogating
he cannot have been interrogating
we cannot have been interrogating
you cannot have been interrogating
they cannot have been interrogating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I interrogate?
can you interrogate?
can he interrogate?
can we interrogate?
can you interrogate?
can they interrogate? 	can I be interrogating?
can you be interrogating?
can he be interrogating?
can we be interrogating?
can you be interrogating?
can they be interrogating? 	can I have interrogated?
can you have interrogated?
can he have interrogated?
can we have interrogated?
can you have interrogated?
can they have interrogated? 	can I have been interrogating?
can you have been interrogating?
can he have been interrogating?
can we have been interrogating?
can you have been interrogating?
can they have been interrogating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not interrogate?
can you not interrogate?
can he not interrogate?
can we not interrogate?
can you not interrogate?
can they not interrogate? 	can I not be interrogating?
can you not be interrogating?
can he not be interrogating?
can we not be interrogating?
can you not be interrogating?
can they not be interrogating? 	can I not have interrogated?
can you not have interrogated?
can he not have interrogated?
can we not have interrogated?
can you not have interrogated?
can they not have interrogated? 	can I not have been interrogating?
can you not have been interrogating?
can he not have been interrogating?
can we not have been interrogating?
can you not have been interrogating?
can they not have been interrogating?