should detain
Regular verb: detain - detained- detained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd detain
you'd detain
he'd detain
we'd detain
you'd detain
they'd detain 	I'd be detaining
you'd be detaining
he'd be detaining
we'd be detaining
you'd be detaining
they'd be detaining	I should've detained
you should've detained
he should've detained
we should've detained
you should've detained
they should've detained	I should've been detaining
you should've been detaining
he should've been detaining
we should've been detaining
you should've been detaining
they should've been detaining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't detain
you shouldn't detain
he shouldn't detain
we shouldn't detain
you shouldn't detain
they shouldn't detain 	I shouldn't be detaining
you shouldn't be detaining
he shouldn't be detaining
we shouldn't be detaining
you shouldn't be detaining
they shouldn't be detaining	I shouldn't have detained
you shouldn't have detained
he shouldn't have detained
we shouldn't have detained
you shouldn't have detained
they shouldn't have detained	I shouldn't have been detaining
you shouldn't have been detaining
he shouldn't have been detaining
we shouldn't have been detaining
you shouldn't have been detaining
they shouldn't have been detaining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I detain?
should you detain?
should he detain?
should we detain?
should you detain?
should they detain? 	should I be detaining?
should you be detaining?
should he be detaining?
should we be detaining?
should you be detaining?
should they be detaining? 	should I have detained?
should you have detained?
should he have detained?
should we have detained?
should you have detained?
should they have detained? 	should I have been detaining?
should you have been detaining?
should he have been detaining?
should we have been detaining?
should you have been detaining?
should they have been detaining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I detain?
shouldn't you detain?
shouldn't he detain?
shouldn't we detain?
shouldn't you detain?
shouldn't they detain? 	shouldn't I be detaining?
shouldn't you be detaining?
shouldn't he be detaining?
shouldn't we be detaining?
shouldn't you be detaining?
shouldn't they be detaining? 	shouldn't I have detained?
shouldn't you have detained?
shouldn't he have detained?
shouldn't we have detained?
shouldn't you have detained?
shouldn't they have detained? 	shouldn't I have been detaining?
shouldn't you have been detaining?
shouldn't he have been detaining?
shouldn't we have been detaining?
shouldn't you have been detaining?
shouldn't they have been detaining?