should interrogate
Regular verb: interrogate - interrogated- interrogated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd interrogate
you'd interrogate
she'd interrogate
we'd interrogate
you'd interrogate
they'd interrogate 	I'd be interrogating
you'd be interrogating
she'd be interrogating
we'd be interrogating
you'd be interrogating
they'd be interrogating	I should've interrogated
you should've interrogated
she should've interrogated
we should've interrogated
you should've interrogated
they should've interrogated	I should've been interrogating
you should've been interrogating
she should've been interrogating
we should've been interrogating
you should've been interrogating
they should've been interrogating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't interrogate
you shouldn't interrogate
she shouldn't interrogate
we shouldn't interrogate
you shouldn't interrogate
they shouldn't interrogate 	I shouldn't be interrogating
you shouldn't be interrogating
she shouldn't be interrogating
we shouldn't be interrogating
you shouldn't be interrogating
they shouldn't be interrogating	I shouldn't have interrogated
you shouldn't have interrogated
she shouldn't have interrogated
we shouldn't have interrogated
you shouldn't have interrogated
they shouldn't have interrogated	I shouldn't have been interrogating
you shouldn't have been interrogating
she shouldn't have been interrogating
we shouldn't have been interrogating
you shouldn't have been interrogating
they shouldn't have been interrogating	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I interrogate?
shouldn't you interrogate?
shouldn't she interrogate?
shouldn't we interrogate?
shouldn't you interrogate?
shouldn't they interrogate? 	shouldn't I be interrogating?
shouldn't you be interrogating?
shouldn't she be interrogating?
shouldn't we be interrogating?
shouldn't you be interrogating?
shouldn't they be interrogating? 	shouldn't I have interrogated?
shouldn't you have interrogated?
shouldn't she have interrogated?
shouldn't we have interrogated?
shouldn't you have interrogated?
shouldn't they have interrogated? 	shouldn't I have been interrogating?
shouldn't you have been interrogating?
shouldn't she have been interrogating?
shouldn't we have been interrogating?
shouldn't you have been interrogating?
shouldn't they have been interrogating?