could contaminate
Verbo regolare: contaminate - contaminated- contaminated

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could contaminate
you could contaminate
he could contaminate
we could contaminate
you could contaminate
they could contaminate 	I could be contaminating
you could be contaminating
he could be contaminating
we could be contaminating
you could be contaminating
they could be contaminating	I could have contaminated
you could have contaminated
he could have contaminated
we could have contaminated
you could have contaminated
they could have contaminated	I could have been contaminating
you could have been contaminating
he could have been contaminating
we could have been contaminating
you could have been contaminating
they could have been contaminating	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't contaminate
you couldn't contaminate
he couldn't contaminate
we couldn't contaminate
you couldn't contaminate
they couldn't contaminate 	I couldn't be contaminating
you couldn't be contaminating
he couldn't be contaminating
we couldn't be contaminating
you couldn't be contaminating
they couldn't be contaminating	I couldn't have contaminated
you couldn't have contaminated
he couldn't have contaminated
we couldn't have contaminated
you couldn't have contaminated
they couldn't have contaminated	I couldn't have been contaminating
you couldn't have been contaminating
he couldn't have been contaminating
we couldn't have been contaminating
you couldn't have been contaminating
they couldn't have been contaminating	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I contaminate?
could you contaminate?
could he contaminate?
could we contaminate?
could you contaminate?
could they contaminate? 	could I be contaminating?
could you be contaminating?
could he be contaminating?
could we be contaminating?
could you be contaminating?
could they be contaminating? 	could I have contaminated?
could you have contaminated?
could he have contaminated?
could we have contaminated?
could you have contaminated?
could they have contaminated? 	could I have been contaminating?
could you have been contaminating?
could he have been contaminating?
could we have been contaminating?
could you have been contaminating?
could they have been contaminating? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I contaminate?
couldn't you contaminate?
couldn't he contaminate?
couldn't we contaminate?
couldn't you contaminate?
couldn't they contaminate? 	couldn't I be contaminating?
couldn't you be contaminating?
couldn't he be contaminating?
couldn't we be contaminating?
couldn't you be contaminating?
couldn't they be contaminating? 	couldn't I have contaminated?
couldn't you have contaminated?
couldn't he have contaminated?
couldn't we have contaminated?
couldn't you have contaminated?
couldn't they have contaminated? 	couldn't I have been contaminating?
couldn't you have been contaminating?
couldn't he have been contaminating?
couldn't we have been contaminating?
couldn't you have been contaminating?
couldn't they have been contaminating?