could isolate
Verbo regolare: isolate - isolated- isolated

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could isolate
you could isolate
he could isolate
we could isolate
you could isolate
they could isolate 	I could be isolating
you could be isolating
he could be isolating
we could be isolating
you could be isolating
they could be isolating	I could have isolated
you could have isolated
he could have isolated
we could have isolated
you could have isolated
they could have isolated	I could have been isolating
you could have been isolating
he could have been isolating
we could have been isolating
you could have been isolating
they could have been isolating	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't isolate
you couldn't isolate
he couldn't isolate
we couldn't isolate
you couldn't isolate
they couldn't isolate 	I couldn't be isolating
you couldn't be isolating
he couldn't be isolating
we couldn't be isolating
you couldn't be isolating
they couldn't be isolating	I couldn't have isolated
you couldn't have isolated
he couldn't have isolated
we couldn't have isolated
you couldn't have isolated
they couldn't have isolated	I couldn't have been isolating
you couldn't have been isolating
he couldn't have been isolating
we couldn't have been isolating
you couldn't have been isolating
they couldn't have been isolating	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I isolate?
could you isolate?
could he isolate?
could we isolate?
could you isolate?
could they isolate? 	could I be isolating?
could you be isolating?
could he be isolating?
could we be isolating?
could you be isolating?
could they be isolating? 	could I have isolated?
could you have isolated?
could he have isolated?
could we have isolated?
could you have isolated?
could they have isolated? 	could I have been isolating?
could you have been isolating?
could he have been isolating?
could we have been isolating?
could you have been isolating?
could they have been isolating? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I isolate?
couldn't you isolate?
couldn't he isolate?
couldn't we isolate?
couldn't you isolate?
couldn't they isolate? 	couldn't I be isolating?
couldn't you be isolating?
couldn't he be isolating?
couldn't we be isolating?
couldn't you be isolating?
couldn't they be isolating? 	couldn't I have isolated?
couldn't you have isolated?
couldn't he have isolated?
couldn't we have isolated?
couldn't you have isolated?
couldn't they have isolated? 	couldn't I have been isolating?
couldn't you have been isolating?
couldn't he have been isolating?
couldn't we have been isolating?
couldn't you have been isolating?
couldn't they have been isolating?