could empoison
Verbo regular: empoison - empoisoned- empoisoned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could empoison
you could empoison
she could empoison
we could empoison
you could empoison
they could empoison 	I could be empoisoning
you could be empoisoning
she could be empoisoning
we could be empoisoning
you could be empoisoning
they could be empoisoning	I could have empoisoned
you could have empoisoned
she could have empoisoned
we could have empoisoned
you could have empoisoned
they could have empoisoned	I could have been empoisoning
you could have been empoisoning
she could have been empoisoning
we could have been empoisoning
you could have been empoisoning
they could have been empoisoning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not empoison
you could not empoison
she could not empoison
we could not empoison
you could not empoison
they could not empoison 	I could not be empoisoning
you could not be empoisoning
she could not be empoisoning
we could not be empoisoning
you could not be empoisoning
they could not be empoisoning	I could not have empoisoned
you could not have empoisoned
she could not have empoisoned
we could not have empoisoned
you could not have empoisoned
they could not have empoisoned	I could not have been empoisoning
you could not have been empoisoning
she could not have been empoisoning
we could not have been empoisoning
you could not have been empoisoning
they could not have been empoisoning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I empoison?
could you empoison?
could she empoison?
could we empoison?
could you empoison?
could they empoison? 	could I be empoisoning?
could you be empoisoning?
could she be empoisoning?
could we be empoisoning?
could you be empoisoning?
could they be empoisoning? 	could I have empoisoned?
could you have empoisoned?
could she have empoisoned?
could we have empoisoned?
could you have empoisoned?
could they have empoisoned? 	could I have been empoisoning?
could you have been empoisoning?
could she have been empoisoning?
could we have been empoisoning?
could you have been empoisoning?
could they have been empoisoning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not empoison?
could you not empoison?
could she not empoison?
could we not empoison?
could you not empoison?
could they not empoison? 	could I not be empoisoning?
could you not be empoisoning?
could she not be empoisoning?
could we not be empoisoning?
could you not be empoisoning?
could they not be empoisoning? 	could I not have empoisoned?
could you not have empoisoned?
could she not have empoisoned?
could we not have empoisoned?
could you not have empoisoned?
could they not have empoisoned? 	could I not have been empoisoning?
could you not have been empoisoning?
could she not have been empoisoning?
could we not have been empoisoning?
could you not have been empoisoning?
could they not have been empoisoning?