could postpone
Regular verb: postpone - postponed- postponed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could postpone
you could postpone
he could postpone
we could postpone
you could postpone
they could postpone 	I could be postponing
you could be postponing
he could be postponing
we could be postponing
you could be postponing
they could be postponing	I could have postponed
you could have postponed
he could have postponed
we could have postponed
you could have postponed
they could have postponed	I could have been postponing
you could have been postponing
he could have been postponing
we could have been postponing
you could have been postponing
they could have been postponing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't postpone
you couldn't postpone
he couldn't postpone
we couldn't postpone
you couldn't postpone
they couldn't postpone 	I couldn't be postponing
you couldn't be postponing
he couldn't be postponing
we couldn't be postponing
you couldn't be postponing
they couldn't be postponing	I couldn't have postponed
you couldn't have postponed
he couldn't have postponed
we couldn't have postponed
you couldn't have postponed
they couldn't have postponed	I couldn't have been postponing
you couldn't have been postponing
he couldn't have been postponing
we couldn't have been postponing
you couldn't have been postponing
they couldn't have been postponing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I postpone?
could you postpone?
could he postpone?
could we postpone?
could you postpone?
could they postpone? 	could I be postponing?
could you be postponing?
could he be postponing?
could we be postponing?
could you be postponing?
could they be postponing? 	could I have postponed?
could you have postponed?
could he have postponed?
could we have postponed?
could you have postponed?
could they have postponed? 	could I have been postponing?
could you have been postponing?
could he have been postponing?
could we have been postponing?
could you have been postponing?
could they have been postponing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I postpone?
couldn't you postpone?
couldn't he postpone?
couldn't we postpone?
couldn't you postpone?
couldn't they postpone? 	couldn't I be postponing?
couldn't you be postponing?
couldn't he be postponing?
couldn't we be postponing?
couldn't you be postponing?
couldn't they be postponing? 	couldn't I have postponed?
couldn't you have postponed?
couldn't he have postponed?
couldn't we have postponed?
couldn't you have postponed?
couldn't they have postponed? 	couldn't I have been postponing?
couldn't you have been postponing?
couldn't he have been postponing?
couldn't we have been postponing?
couldn't you have been postponing?
couldn't they have been postponing?