could postfix
Verbo regular: postfix - postfixed- postfixed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could postfix
you could postfix
he could postfix
we could postfix
you could postfix
they could postfix 	I could be postfixing
you could be postfixing
he could be postfixing
we could be postfixing
you could be postfixing
they could be postfixing	I could have postfixed
you could have postfixed
he could have postfixed
we could have postfixed
you could have postfixed
they could have postfixed	I could have been postfixing
you could have been postfixing
he could have been postfixing
we could have been postfixing
you could have been postfixing
they could have been postfixing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not postfix
you could not postfix
he could not postfix
we could not postfix
you could not postfix
they could not postfix 	I could not be postfixing
you could not be postfixing
he could not be postfixing
we could not be postfixing
you could not be postfixing
they could not be postfixing	I could not have postfixed
you could not have postfixed
he could not have postfixed
we could not have postfixed
you could not have postfixed
they could not have postfixed	I could not have been postfixing
you could not have been postfixing
he could not have been postfixing
we could not have been postfixing
you could not have been postfixing
they could not have been postfixing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I postfix?
could you postfix?
could he postfix?
could we postfix?
could you postfix?
could they postfix? 	could I be postfixing?
could you be postfixing?
could he be postfixing?
could we be postfixing?
could you be postfixing?
could they be postfixing? 	could I have postfixed?
could you have postfixed?
could he have postfixed?
could we have postfixed?
could you have postfixed?
could they have postfixed? 	could I have been postfixing?
could you have been postfixing?
could he have been postfixing?
could we have been postfixing?
could you have been postfixing?
could they have been postfixing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not postfix?
could you not postfix?
could he not postfix?
could we not postfix?
could you not postfix?
could they not postfix? 	could I not be postfixing?
could you not be postfixing?
could he not be postfixing?
could we not be postfixing?
could you not be postfixing?
could they not be postfixing? 	could I not have postfixed?
could you not have postfixed?
could he not have postfixed?
could we not have postfixed?
could you not have postfixed?
could they not have postfixed? 	could I not have been postfixing?
could you not have been postfixing?
could he not have been postfixing?
could we not have been postfixing?
could you not have been postfixing?
could they not have been postfixing?