could infect
Verbo regular: infect - infected- infected

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could infect
you could infect
he could infect
we could infect
you could infect
they could infect 	I could be infecting
you could be infecting
he could be infecting
we could be infecting
you could be infecting
they could be infecting	I could have infected
you could have infected
he could have infected
we could have infected
you could have infected
they could have infected	I could have been infecting
you could have been infecting
he could have been infecting
we could have been infecting
you could have been infecting
they could have been infecting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not infect
you could not infect
he could not infect
we could not infect
you could not infect
they could not infect 	I could not be infecting
you could not be infecting
he could not be infecting
we could not be infecting
you could not be infecting
they could not be infecting	I could not have infected
you could not have infected
he could not have infected
we could not have infected
you could not have infected
they could not have infected	I could not have been infecting
you could not have been infecting
he could not have been infecting
we could not have been infecting
you could not have been infecting
they could not have been infecting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I infect?
could you infect?
could he infect?
could we infect?
could you infect?
could they infect? 	could I be infecting?
could you be infecting?
could he be infecting?
could we be infecting?
could you be infecting?
could they be infecting? 	could I have infected?
could you have infected?
could he have infected?
could we have infected?
could you have infected?
could they have infected? 	could I have been infecting?
could you have been infecting?
could he have been infecting?
could we have been infecting?
could you have been infecting?
could they have been infecting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not infect?
could you not infect?
could he not infect?
could we not infect?
could you not infect?
could they not infect? 	could I not be infecting?
could you not be infecting?
could he not be infecting?
could we not be infecting?
could you not be infecting?
could they not be infecting? 	could I not have infected?
could you not have infected?
could he not have infected?
could we not have infected?
could you not have infected?
could they not have infected? 	could I not have been infecting?
could you not have been infecting?
could he not have been infecting?
could we not have been infecting?
could you not have been infecting?
could they not have been infecting?