could preinstruct
Verbo regolare: preinstruct - preinstructed- preinstructed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could preinstruct
you could preinstruct
she could preinstruct
we could preinstruct
you could preinstruct
they could preinstruct 	I could be preinstructing
you could be preinstructing
she could be preinstructing
we could be preinstructing
you could be preinstructing
they could be preinstructing	I could have preinstructed
you could have preinstructed
she 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
she could have been preinstructing
we could have been preinstructing
you could have been preinstructing
they could have been preinstructing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't preinstruct
you couldn't preinstruct
she 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
she 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
she 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
she couldn't have been preinstructing
we couldn't have been preinstructing
you couldn't have been preinstructing
they couldn't have been preinstructing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I preinstruct?
could you preinstruct?
could she preinstruct?
could we preinstruct?
could you preinstruct?
could they preinstruct? 	could I be preinstructing?
could you be preinstructing?
could she be preinstructing?
could we be preinstructing?
could you be preinstructing?
could they be preinstructing? 	could I have preinstructed?
could you have preinstructed?
could she 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 she have been preinstructing?
could we have been preinstructing?
could you have been preinstructing?
could they have been preinstructing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I preinstruct?
couldn't you preinstruct?
couldn't she 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 she 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 she 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 she have been preinstructing?
couldn't we have been preinstructing?
couldn't you have been preinstructing?
couldn't they have been preinstructing?