could preinstruct
Verbe régulier : preinstruct - preinstructed- preinstructed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could preinstruct
you could preinstruct
he could preinstruct
we could preinstruct
you could preinstruct
they could preinstruct 	I could be preinstructing
you could be preinstructing
he could be preinstructing
we could be preinstructing
you could be preinstructing
they could be preinstructing	I could have preinstructed
you could have preinstructed
he could have preinstructed
we could have preinstructed
you could have preinstructed
they could have preinstructed	I could have been preinstructing
you could have been preinstructing
he could have been preinstructing
we could have been preinstructing
you could have been preinstructing
they could have been preinstructing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't preinstruct
you couldn't preinstruct
he couldn't preinstruct
we couldn't preinstruct
you couldn't preinstruct
they couldn't preinstruct 	I couldn't be preinstructing
you couldn't be preinstructing
he couldn't be preinstructing
we couldn't be preinstructing
you couldn't be preinstructing
they couldn't be preinstructing	I couldn't have preinstructed
you couldn't have preinstructed
he couldn't have preinstructed
we couldn't have preinstructed
you couldn't have preinstructed
they couldn't have preinstructed	I couldn't have been preinstructing
you couldn't have been preinstructing
he couldn't have been preinstructing
we couldn't have been preinstructing
you couldn't have been preinstructing
they couldn't have been preinstructing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I preinstruct?
could you preinstruct?
could he preinstruct?
could we preinstruct?
could you preinstruct?
could they preinstruct? 	could I be preinstructing?
could you be preinstructing?
could he be preinstructing?
could we be preinstructing?
could you be preinstructing?
could they be preinstructing? 	could I have preinstructed?
could you have preinstructed?
could he have preinstructed?
could we have preinstructed?
could you have preinstructed?
could they have preinstructed? 	could I have been preinstructing?
could you have been preinstructing?
could he have been preinstructing?
could we have been preinstructing?
could you have been preinstructing?
could they have been preinstructing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I preinstruct?
couldn't you preinstruct?
couldn't he preinstruct?
couldn't we preinstruct?
couldn't you preinstruct?
couldn't they preinstruct? 	couldn't I be preinstructing?
couldn't you be preinstructing?
couldn't he be preinstructing?
couldn't we be preinstructing?
couldn't you be preinstructing?
couldn't they be preinstructing? 	couldn't I have preinstructed?
couldn't you have preinstructed?
couldn't he have preinstructed?
couldn't we have preinstructed?
couldn't you have preinstructed?
couldn't they have preinstructed? 	couldn't I have been preinstructing?
couldn't you have been preinstructing?
couldn't he have been preinstructing?
couldn't we have been preinstructing?
couldn't you have been preinstructing?
couldn't they have been preinstructing?