can postdate
Regular verb: postdate - postdated- postdated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can postdate
you can postdate
he can postdate
we can postdate
you can postdate
they can postdate 	I can be postdating
you can be postdating
he can be postdating
we can be postdating
you can be postdating
they can be postdating	I can have postdated
you can have postdated
he can have postdated
we can have postdated
you can have postdated
they can have postdated	I can have been postdating
you can have been postdating
he can have been postdating
we can have been postdating
you can have been postdating
they can have been postdating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot postdate
you cannot postdate
he cannot postdate
we cannot postdate
you cannot postdate
they cannot postdate 	I cannot be postdating
you cannot be postdating
he cannot be postdating
we cannot be postdating
you cannot be postdating
they cannot be postdating	I cannot have postdated
you cannot have postdated
he cannot have postdated
we cannot have postdated
you cannot have postdated
they cannot have postdated	I cannot have been postdating
you cannot have been postdating
he cannot have been postdating
we cannot have been postdating
you cannot have been postdating
they cannot have been postdating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I postdate?
can you postdate?
can he postdate?
can we postdate?
can you postdate?
can they postdate? 	can I be postdating?
can you be postdating?
can he be postdating?
can we be postdating?
can you be postdating?
can they be postdating? 	can I have postdated?
can you have postdated?
can he have postdated?
can we have postdated?
can you have postdated?
can they have postdated? 	can I have been postdating?
can you have been postdating?
can he have been postdating?
can we have been postdating?
can you have been postdating?
can they have been postdating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not postdate?
can you not postdate?
can he not postdate?
can we not postdate?
can you not postdate?
can they not postdate? 	can I not be postdating?
can you not be postdating?
can he not be postdating?
can we not be postdating?
can you not be postdating?
can they not be postdating? 	can I not have postdated?
can you not have postdated?
can he not have postdated?
can we not have postdated?
can you not have postdated?
can they not have postdated? 	can I not have been postdating?
can you not have been postdating?
can he not have been postdating?
can we not have been postdating?
can you not have been postdating?
can they not have been postdating?