could nullify
Verbo regular: nullify - nullified- nullified

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could nullify
you could nullify
he could nullify
we could nullify
you could nullify
they could nullify 	I could be nullifying
you could be nullifying
he could be nullifying
we could be nullifying
you could be nullifying
they could be nullifying	I could have nullified
you could have nullified
he could have nullified
we could have nullified
you could have nullified
they could have nullified	I could have been nullifying
you could have been nullifying
he could have been nullifying
we could have been nullifying
you could have been nullifying
they could have been nullifying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not nullify
you could not nullify
he could not nullify
we could not nullify
you could not nullify
they could not nullify 	I could not be nullifying
you could not be nullifying
he could not be nullifying
we could not be nullifying
you could not be nullifying
they could not be nullifying	I could not have nullified
you could not have nullified
he could not have nullified
we could not have nullified
you could not have nullified
they could not have nullified	I could not have been nullifying
you could not have been nullifying
he could not have been nullifying
we could not have been nullifying
you could not have been nullifying
they could not have been nullifying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I nullify?
could you nullify?
could he nullify?
could we nullify?
could you nullify?
could they nullify? 	could I be nullifying?
could you be nullifying?
could he be nullifying?
could we be nullifying?
could you be nullifying?
could they be nullifying? 	could I have nullified?
could you have nullified?
could he have nullified?
could we have nullified?
could you have nullified?
could they have nullified? 	could I have been nullifying?
could you have been nullifying?
could he have been nullifying?
could we have been nullifying?
could you have been nullifying?
could they have been nullifying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not nullify?
could you not nullify?
could he not nullify?
could we not nullify?
could you not nullify?
could they not nullify? 	could I not be nullifying?
could you not be nullifying?
could he not be nullifying?
could we not be nullifying?
could you not be nullifying?
could they not be nullifying? 	could I not have nullified?
could you not have nullified?
could he not have nullified?
could we not have nullified?
could you not have nullified?
could they not have nullified? 	could I not have been nullifying?
could you not have been nullifying?
could he not have been nullifying?
could we not have been nullifying?
could you not have been nullifying?
could they not have been nullifying?