shall postdate
Regular verb: postdate - postdated- postdated

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not postdate
you shall not postdate
she shall not postdate
we shall not postdate
you shall not postdate
they shall not postdate 	I shall not be postdating
you shall not be postdating
she shall not be postdating
we shall not be postdating
you shall not be postdating
they shall not be postdating	I shall not have postdated
you shall not have postdated
she shall not have postdated
we shall not have postdated
you shall not have postdated
they shall not have postdated	I shall not have been postdating
you shall not have been postdating
she shall not have been postdating
we shall not have been postdating
you shall not have been postdating
they shall not have been postdating	

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

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