could retard
Verbo regolare: retard - retarded- retarded

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could retard
you could retard
he could retard
we could retard
you could retard
they could retard 	I could be retarding
you could be retarding
he could be retarding
we could be retarding
you could be retarding
they could be retarding	I could have retarded
you could have retarded
he could have retarded
we could have retarded
you could have retarded
they could have retarded	I could have been retarding
you could have been retarding
he could have been retarding
we could have been retarding
you could have been retarding
they could have been retarding	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't retard
you couldn't retard
he couldn't retard
we couldn't retard
you couldn't retard
they couldn't retard 	I couldn't be retarding
you couldn't be retarding
he couldn't be retarding
we couldn't be retarding
you couldn't be retarding
they couldn't be retarding	I couldn't have retarded
you couldn't have retarded
he couldn't have retarded
we couldn't have retarded
you couldn't have retarded
they couldn't have retarded	I couldn't have been retarding
you couldn't have been retarding
he couldn't have been retarding
we couldn't have been retarding
you couldn't have been retarding
they couldn't have been retarding	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I retard?
could you retard?
could he retard?
could we retard?
could you retard?
could they retard? 	could I be retarding?
could you be retarding?
could he be retarding?
could we be retarding?
could you be retarding?
could they be retarding? 	could I have retarded?
could you have retarded?
could he have retarded?
could we have retarded?
could you have retarded?
could they have retarded? 	could I have been retarding?
could you have been retarding?
could he have been retarding?
could we have been retarding?
could you have been retarding?
could they have been retarding? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I retard?
couldn't you retard?
couldn't he retard?
couldn't we retard?
couldn't you retard?
couldn't they retard? 	couldn't I be retarding?
couldn't you be retarding?
couldn't he be retarding?
couldn't we be retarding?
couldn't you be retarding?
couldn't they be retarding? 	couldn't I have retarded?
couldn't you have retarded?
couldn't he have retarded?
couldn't we have retarded?
couldn't you have retarded?
couldn't they have retarded? 	couldn't I have been retarding?
couldn't you have been retarding?
couldn't he have been retarding?
couldn't we have been retarding?
couldn't you have been retarding?
couldn't they have been retarding?