could preinstill
Verbo regular: preinstill - preinstilled- preinstilled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could preinstill
you could preinstill
he could preinstill
we could preinstill
you could preinstill
they could preinstill 	I could be preinstilling
you could be preinstilling
he could be preinstilling
we could be preinstilling
you could be preinstilling
they could be preinstilling	I could have preinstilled
you could have preinstilled
he could have preinstilled
we could have preinstilled
you could have preinstilled
they could have preinstilled	I could have been preinstilling
you could have been preinstilling
he could have been preinstilling
we could have been preinstilling
you could have been preinstilling
they could have been preinstilling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't preinstill
you couldn't preinstill
he couldn't preinstill
we couldn't preinstill
you couldn't preinstill
they couldn't preinstill 	I couldn't be preinstilling
you couldn't be preinstilling
he couldn't be preinstilling
we couldn't be preinstilling
you couldn't be preinstilling
they couldn't be preinstilling	I couldn't have preinstilled
you couldn't have preinstilled
he couldn't have preinstilled
we couldn't have preinstilled
you couldn't have preinstilled
they couldn't have preinstilled	I couldn't have been preinstilling
you couldn't have been preinstilling
he couldn't have been preinstilling
we couldn't have been preinstilling
you couldn't have been preinstilling
they couldn't have been preinstilling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I preinstill?
could you preinstill?
could he preinstill?
could we preinstill?
could you preinstill?
could they preinstill? 	could I be preinstilling?
could you be preinstilling?
could he be preinstilling?
could we be preinstilling?
could you be preinstilling?
could they be preinstilling? 	could I have preinstilled?
could you have preinstilled?
could he have preinstilled?
could we have preinstilled?
could you have preinstilled?
could they have preinstilled? 	could I have been preinstilling?
could you have been preinstilling?
could he have been preinstilling?
could we have been preinstilling?
could you have been preinstilling?
could they have been preinstilling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I preinstill?
couldn't you preinstill?
couldn't he preinstill?
couldn't we preinstill?
couldn't you preinstill?
couldn't they preinstill? 	couldn't I be preinstilling?
couldn't you be preinstilling?
couldn't he be preinstilling?
couldn't we be preinstilling?
couldn't you be preinstilling?
couldn't they be preinstilling? 	couldn't I have preinstilled?
couldn't you have preinstilled?
couldn't he have preinstilled?
couldn't we have preinstilled?
couldn't you have preinstilled?
couldn't they have preinstilled? 	couldn't I have been preinstilling?
couldn't you have been preinstilling?
couldn't he have been preinstilling?
couldn't we have been preinstilling?
couldn't you have been preinstilling?
couldn't they have been preinstilling?