could preface
Verbo regolare: preface - prefaced- prefaced

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could preface
you could preface
she could preface
we could preface
you could preface
they could preface 	I could be prefacing
you could be prefacing
she could be prefacing
we could be prefacing
you could be prefacing
they could be prefacing	I could have prefaced
you could have prefaced
she could have prefaced
we could have prefaced
you could have prefaced
they could have prefaced	I could have been prefacing
you could have been prefacing
she could have been prefacing
we could have been prefacing
you could have been prefacing
they could have been prefacing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not preface
you could not preface
she could not preface
we could not preface
you could not preface
they could not preface 	I could not be prefacing
you could not be prefacing
she could not be prefacing
we could not be prefacing
you could not be prefacing
they could not be prefacing	I could not have prefaced
you could not have prefaced
she could not have prefaced
we could not have prefaced
you could not have prefaced
they could not have prefaced	I could not have been prefacing
you could not have been prefacing
she could not have been prefacing
we could not have been prefacing
you could not have been prefacing
they could not have been prefacing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I preface?
could you preface?
could she preface?
could we preface?
could you preface?
could they preface? 	could I be prefacing?
could you be prefacing?
could she be prefacing?
could we be prefacing?
could you be prefacing?
could they be prefacing? 	could I have prefaced?
could you have prefaced?
could she have prefaced?
could we have prefaced?
could you have prefaced?
could they have prefaced? 	could I have been prefacing?
could you have been prefacing?
could she have been prefacing?
could we have been prefacing?
could you have been prefacing?
could they have been prefacing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not preface?
could you not preface?
could she not preface?
could we not preface?
could you not preface?
could they not preface? 	could I not be prefacing?
could you not be prefacing?
could she not be prefacing?
could we not be prefacing?
could you not be prefacing?
could they not be prefacing? 	could I not have prefaced?
could you not have prefaced?
could she not have prefaced?
could we not have prefaced?
could you not have prefaced?
could they not have prefaced? 	could I not have been prefacing?
could you not have been prefacing?
could she not have been prefacing?
could we not have been prefacing?
could you not have been prefacing?
could they not have been prefacing?