could institute
Verbo regular: institute - instituted- instituted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could institute
you could institute
she could institute
we could institute
you could institute
they could institute 	I could be instituting
you could be instituting
she could be instituting
we could be instituting
you could be instituting
they could be instituting	I could have instituted
you could have instituted
she could have instituted
we could have instituted
you could have instituted
they could have instituted	I could have been instituting
you could have been instituting
she could have been instituting
we could have been instituting
you could have been instituting
they could have been instituting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not institute
you could not institute
she could not institute
we could not institute
you could not institute
they could not institute 	I could not be instituting
you could not be instituting
she could not be instituting
we could not be instituting
you could not be instituting
they could not be instituting	I could not have instituted
you could not have instituted
she could not have instituted
we could not have instituted
you could not have instituted
they could not have instituted	I could not have been instituting
you could not have been instituting
she could not have been instituting
we could not have been instituting
you could not have been instituting
they could not have been instituting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I institute?
could you institute?
could she institute?
could we institute?
could you institute?
could they institute? 	could I be instituting?
could you be instituting?
could she be instituting?
could we be instituting?
could you be instituting?
could they be instituting? 	could I have instituted?
could you have instituted?
could she have instituted?
could we have instituted?
could you have instituted?
could they have instituted? 	could I have been instituting?
could you have been instituting?
could she have been instituting?
could we have been instituting?
could you have been instituting?
could they have been instituting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not institute?
could you not institute?
could she not institute?
could we not institute?
could you not institute?
could they not institute? 	could I not be instituting?
could you not be instituting?
could she not be instituting?
could we not be instituting?
could you not be instituting?
could they not be instituting? 	could I not have instituted?
could you not have instituted?
could she not have instituted?
could we not have instituted?
could you not have instituted?
could they not have instituted? 	could I not have been instituting?
could you not have been instituting?
could she not have been instituting?
could we not have been instituting?
could you not have been instituting?
could they not have been instituting?