can preen
Verbo regular: preen - preened- preened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can preen
you can preen
she can preen
we can preen
you can preen
they can preen 	I can be preening
you can be preening
she can be preening
we can be preening
you can be preening
they can be preening	I can have preened
you can have preened
she can have preened
we can have preened
you can have preened
they can have preened	I can have been preening
you can have been preening
she can have been preening
we can have been preening
you can have been preening
they can have been preening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot preen
you cannot preen
she cannot preen
we cannot preen
you cannot preen
they cannot preen 	I cannot be preening
you cannot be preening
she cannot be preening
we cannot be preening
you cannot be preening
they cannot be preening	I cannot have preened
you cannot have preened
she cannot have preened
we cannot have preened
you cannot have preened
they cannot have preened	I cannot have been preening
you cannot have been preening
she cannot have been preening
we cannot have been preening
you cannot have been preening
they cannot have been preening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I preen?
can you preen?
can she preen?
can we preen?
can you preen?
can they preen? 	can I be preening?
can you be preening?
can she be preening?
can we be preening?
can you be preening?
can they be preening? 	can I have preened?
can you have preened?
can she have preened?
can we have preened?
can you have preened?
can they have preened? 	can I have been preening?
can you have been preening?
can she have been preening?
can we have been preening?
can you have been preening?
can they have been preening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not preen?
can you not preen?
can she not preen?
can we not preen?
can you not preen?
can they not preen? 	can I not be preening?
can you not be preening?
can she not be preening?
can we not be preening?
can you not be preening?
can they not be preening? 	can I not have preened?
can you not have preened?
can she not have preened?
can we not have preened?
can you not have preened?
can they not have preened? 	can I not have been preening?
can you not have been preening?
can she not have been preening?
can we not have been preening?
can you not have been preening?
can they not have been preening?