should preen
Regular verb: preen - preened- preened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should preen
you should preen
he should preen
we should preen
you should preen
they should preen 	I should be preening
you should be preening
he should be preening
we should be preening
you should be preening
they should be preening	I should have preened
you should have preened
he should have preened
we should have preened
you should have preened
they should have preened	I should have been preening
you should have been preening
he should have been preening
we should have been preening
you should have been preening
they should have been preening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not preen
you should not preen
he should not preen
we should not preen
you should not preen
they should not preen 	I should not be preening
you should not be preening
he should not be preening
we should not be preening
you should not be preening
they should not be preening	I should not have preened
you should not have preened
he should not have preened
we should not have preened
you should not have preened
they should not have preened	I should not have been preening
you should not have been preening
he should not have been preening
we should not have been preening
you should not have been preening
they should not have been preening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I preen?
should you preen?
should he preen?
should we preen?
should you preen?
should they preen? 	should I be preening?
should you be preening?
should he be preening?
should we be preening?
should you be preening?
should they be preening? 	should I have preened?
should you have preened?
should he have preened?
should we have preened?
should you have preened?
should they have preened? 	should I have been preening?
should you have been preening?
should he have been preening?
should we have been preening?
should you have been preening?
should they have been preening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not preen?
should you not preen?
should he not preen?
should we not preen?
should you not preen?
should they not preen? 	should I not be preening?
should you not be preening?
should he not be preening?
should we not be preening?
should you not be preening?
should they not be preening? 	should I not have preened?
should you not have preened?
should he not have preened?
should we not have preened?
should you not have preened?
should they not have preened? 	should I not have been preening?
should you not have been preening?
should he not have been preening?
should we not have been preening?
should you not have been preening?
should they not have been preening?