could modulate
Verbo regolare: modulate - modulated- modulated

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could modulate
you could modulate
she could modulate
we could modulate
you could modulate
they could modulate 	I could be modulating
you could be modulating
she could be modulating
we could be modulating
you could be modulating
they could be modulating	I could have modulated
you could have modulated
she could have modulated
we could have modulated
you could have modulated
they could have modulated	I could have been modulating
you could have been modulating
she could have been modulating
we could have been modulating
you could have been modulating
they could have been modulating	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't modulate
you couldn't modulate
she couldn't modulate
we couldn't modulate
you couldn't modulate
they couldn't modulate 	I couldn't be modulating
you couldn't be modulating
she couldn't be modulating
we couldn't be modulating
you couldn't be modulating
they couldn't be modulating	I couldn't have modulated
you couldn't have modulated
she couldn't have modulated
we couldn't have modulated
you couldn't have modulated
they couldn't have modulated	I couldn't have been modulating
you couldn't have been modulating
she couldn't have been modulating
we couldn't have been modulating
you couldn't have been modulating
they couldn't have been modulating	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I modulate?
could you modulate?
could she modulate?
could we modulate?
could you modulate?
could they modulate? 	could I be modulating?
could you be modulating?
could she be modulating?
could we be modulating?
could you be modulating?
could they be modulating? 	could I have modulated?
could you have modulated?
could she have modulated?
could we have modulated?
could you have modulated?
could they have modulated? 	could I have been modulating?
could you have been modulating?
could she have been modulating?
could we have been modulating?
could you have been modulating?
could they have been modulating? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I modulate?
couldn't you modulate?
couldn't she modulate?
couldn't we modulate?
couldn't you modulate?
couldn't they modulate? 	couldn't I be modulating?
couldn't you be modulating?
couldn't she be modulating?
couldn't we be modulating?
couldn't you be modulating?
couldn't they be modulating? 	couldn't I have modulated?
couldn't you have modulated?
couldn't she have modulated?
couldn't we have modulated?
couldn't you have modulated?
couldn't they have modulated? 	couldn't I have been modulating?
couldn't you have been modulating?
couldn't she have been modulating?
couldn't we have been modulating?
couldn't you have been modulating?
couldn't they have been modulating?