could postdate
Verbo regular: postdate - postdated- postdated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could postdate
you could postdate
she could postdate
we could postdate
you could postdate
they could postdate 	I could be postdating
you could be postdating
she could be postdating
we could be postdating
you could be postdating
they could be postdating	I could have postdated
you could have postdated
she could have postdated
we could have postdated
you could have postdated
they could have postdated	I could have been postdating
you could have been postdating
she could have been postdating
we could have been postdating
you could have been postdating
they could have been postdating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not postdate
you could not postdate
she could not postdate
we could not postdate
you could not postdate
they could not postdate 	I could not be postdating
you could not be postdating
she could not be postdating
we could not be postdating
you could not be postdating
they could not be postdating	I could not have postdated
you could not have postdated
she could not have postdated
we could not have postdated
you could not have postdated
they could not have postdated	I could not have been postdating
you could not have been postdating
she could not have been postdating
we could not have been postdating
you could not have been postdating
they could not have been postdating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I postdate?
could you postdate?
could she postdate?
could we postdate?
could you postdate?
could they postdate? 	could I be postdating?
could you be postdating?
could she be postdating?
could we be postdating?
could you be postdating?
could they be postdating? 	could I have postdated?
could you have postdated?
could she have postdated?
could we have postdated?
could you have postdated?
could they have postdated? 	could I have been postdating?
could you have been postdating?
could she have been postdating?
could we have been postdating?
could you have been postdating?
could they have been postdating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not postdate?
could you not postdate?
could she not postdate?
could we not postdate?
could you not postdate?
could they not postdate? 	could I not be postdating?
could you not be postdating?
could she not be postdating?
could we not be postdating?
could you not be postdating?
could they not be postdating? 	could I not have postdated?
could you not have postdated?
could she not have postdated?
could we not have postdated?
could you not have postdated?
could they not have postdated? 	could I not have been postdating?
could you not have been postdating?
could she not have been postdating?
could we not have been postdating?
could you not have been postdating?
could they not have been postdating?