could preinstill
Verbe régulier : preinstill - preinstilled- preinstilled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could preinstill
you could preinstill
she could preinstill
we could preinstill
you could preinstill
they could preinstill 	I could be preinstilling
you could be preinstilling
she could be preinstilling
we could be preinstilling
you could be preinstilling
they could be preinstilling	I could have preinstilled
you could have preinstilled
she 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
she could have been preinstilling
we could have been preinstilling
you could have been preinstilling
they could have been preinstilling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't preinstill
you couldn't preinstill
she 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
she 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
she 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
she couldn't have been preinstilling
we couldn't have been preinstilling
you couldn't have been preinstilling
they couldn't have been preinstilling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I preinstill?
could you preinstill?
could she preinstill?
could we preinstill?
could you preinstill?
could they preinstill? 	could I be preinstilling?
could you be preinstilling?
could she be preinstilling?
could we be preinstilling?
could you be preinstilling?
could they be preinstilling? 	could I have preinstilled?
could you have preinstilled?
could she 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 she have been preinstilling?
could we have been preinstilling?
could you have been preinstilling?
could they have been preinstilling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I preinstill?
couldn't you preinstill?
couldn't she 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 she 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 she 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 she have been preinstilling?
couldn't we have been preinstilling?
couldn't you have been preinstilling?
couldn't they have been preinstilling?