could retrograde
Verbo regolare: retrograde - retrograded- retrograded

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could retrograde
you could retrograde
she could retrograde
we could retrograde
you could retrograde
they could retrograde 	I could be retrograding
you could be retrograding
she could be retrograding
we could be retrograding
you could be retrograding
they could be retrograding	I could have retrograded
you could have retrograded
she could have retrograded
we could have retrograded
you could have retrograded
they could have retrograded	I could have been retrograding
you could have been retrograding
she could have been retrograding
we could have been retrograding
you could have been retrograding
they could have been retrograding	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not retrograde
you could not retrograde
she could not retrograde
we could not retrograde
you could not retrograde
they could not retrograde 	I could not be retrograding
you could not be retrograding
she could not be retrograding
we could not be retrograding
you could not be retrograding
they could not be retrograding	I could not have retrograded
you could not have retrograded
she could not have retrograded
we could not have retrograded
you could not have retrograded
they could not have retrograded	I could not have been retrograding
you could not have been retrograding
she could not have been retrograding
we could not have been retrograding
you could not have been retrograding
they could not have been retrograding	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I retrograde?
could you retrograde?
could she retrograde?
could we retrograde?
could you retrograde?
could they retrograde? 	could I be retrograding?
could you be retrograding?
could she be retrograding?
could we be retrograding?
could you be retrograding?
could they be retrograding? 	could I have retrograded?
could you have retrograded?
could she have retrograded?
could we have retrograded?
could you have retrograded?
could they have retrograded? 	could I have been retrograding?
could you have been retrograding?
could she have been retrograding?
could we have been retrograding?
could you have been retrograding?
could they have been retrograding? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not retrograde?
could you not retrograde?
could she not retrograde?
could we not retrograde?
could you not retrograde?
could they not retrograde? 	could I not be retrograding?
could you not be retrograding?
could she not be retrograding?
could we not be retrograding?
could you not be retrograding?
could they not be retrograding? 	could I not have retrograded?
could you not have retrograded?
could she not have retrograded?
could we not have retrograded?
could you not have retrograded?
could they not have retrograded? 	could I not have been retrograding?
could you not have been retrograding?
could she not have been retrograding?
could we not have been retrograding?
could you not have been retrograding?
could they not have been retrograding?