could retrogress
Verbo regolare: retrogress - retrogressed- retrogressed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could retrogress
you could retrogress
she could retrogress
we could retrogress
you could retrogress
they could retrogress 	I could be retrogressing
you could be retrogressing
she could be retrogressing
we could be retrogressing
you could be retrogressing
they could be retrogressing	I could have retrogressed
you could have retrogressed
she could have retrogressed
we could have retrogressed
you could have retrogressed
they could have retrogressed	I could have been retrogressing
you could have been retrogressing
she could have been retrogressing
we could have been retrogressing
you could have been retrogressing
they could have been retrogressing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't retrogress
you couldn't retrogress
she couldn't retrogress
we couldn't retrogress
you couldn't retrogress
they couldn't retrogress 	I couldn't be retrogressing
you couldn't be retrogressing
she couldn't be retrogressing
we couldn't be retrogressing
you couldn't be retrogressing
they couldn't be retrogressing	I couldn't have retrogressed
you couldn't have retrogressed
she couldn't have retrogressed
we couldn't have retrogressed
you couldn't have retrogressed
they couldn't have retrogressed	I couldn't have been retrogressing
you couldn't have been retrogressing
she couldn't have been retrogressing
we couldn't have been retrogressing
you couldn't have been retrogressing
they couldn't have been retrogressing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I retrogress?
could you retrogress?
could she retrogress?
could we retrogress?
could you retrogress?
could they retrogress? 	could I be retrogressing?
could you be retrogressing?
could she be retrogressing?
could we be retrogressing?
could you be retrogressing?
could they be retrogressing? 	could I have retrogressed?
could you have retrogressed?
could she have retrogressed?
could we have retrogressed?
could you have retrogressed?
could they have retrogressed? 	could I have been retrogressing?
could you have been retrogressing?
could she have been retrogressing?
could we have been retrogressing?
could you have been retrogressing?
could they have been retrogressing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I retrogress?
couldn't you retrogress?
couldn't she retrogress?
couldn't we retrogress?
couldn't you retrogress?
couldn't they retrogress? 	couldn't I be retrogressing?
couldn't you be retrogressing?
couldn't she be retrogressing?
couldn't we be retrogressing?
couldn't you be retrogressing?
couldn't they be retrogressing? 	couldn't I have retrogressed?
couldn't you have retrogressed?
couldn't she have retrogressed?
couldn't we have retrogressed?
couldn't you have retrogressed?
couldn't they have retrogressed? 	couldn't I have been retrogressing?
couldn't you have been retrogressing?
couldn't she have been retrogressing?
couldn't we have been retrogressing?
couldn't you have been retrogressing?
couldn't they have been retrogressing?