could recertify
Verbo regular: recertify - recertified- recertified

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could recertify
you could recertify
he could recertify
we could recertify
you could recertify
they could recertify 	I could be recertifying
you could be recertifying
he could be recertifying
we could be recertifying
you could be recertifying
they could be recertifying	I could have recertified
you could have recertified
he could have recertified
we could have recertified
you could have recertified
they could have recertified	I could have been recertifying
you could have been recertifying
he could have been recertifying
we could have been recertifying
you could have been recertifying
they could have been recertifying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not recertify
you could not recertify
he could not recertify
we could not recertify
you could not recertify
they could not recertify 	I could not be recertifying
you could not be recertifying
he could not be recertifying
we could not be recertifying
you could not be recertifying
they could not be recertifying	I could not have recertified
you could not have recertified
he could not have recertified
we could not have recertified
you could not have recertified
they could not have recertified	I could not have been recertifying
you could not have been recertifying
he could not have been recertifying
we could not have been recertifying
you could not have been recertifying
they could not have been recertifying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I recertify?
could you recertify?
could he recertify?
could we recertify?
could you recertify?
could they recertify? 	could I be recertifying?
could you be recertifying?
could he be recertifying?
could we be recertifying?
could you be recertifying?
could they be recertifying? 	could I have recertified?
could you have recertified?
could he have recertified?
could we have recertified?
could you have recertified?
could they have recertified? 	could I have been recertifying?
could you have been recertifying?
could he have been recertifying?
could we have been recertifying?
could you have been recertifying?
could they have been recertifying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not recertify?
could you not recertify?
could he not recertify?
could we not recertify?
could you not recertify?
could they not recertify? 	could I not be recertifying?
could you not be recertifying?
could he not be recertifying?
could we not be recertifying?
could you not be recertifying?
could they not be recertifying? 	could I not have recertified?
could you not have recertified?
could he not have recertified?
could we not have recertified?
could you not have recertified?
could they not have recertified? 	could I not have been recertifying?
could you not have been recertifying?
could he not have been recertifying?
could we not have been recertifying?
could you not have been recertifying?
could they not have been recertifying?