could blabber
Regular verb: blabber - blabbered- blabbered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could blabber
you could blabber
he could blabber
we could blabber
you could blabber
they could blabber 	I could be blabbering
you could be blabbering
he could be blabbering
we could be blabbering
you could be blabbering
they could be blabbering	I could have blabbered
you could have blabbered
he could have blabbered
we could have blabbered
you could have blabbered
they could have blabbered	I could have been blabbering
you could have been blabbering
he could have been blabbering
we could have been blabbering
you could have been blabbering
they could have been blabbering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't blabber
you couldn't blabber
he couldn't blabber
we couldn't blabber
you couldn't blabber
they couldn't blabber 	I couldn't be blabbering
you couldn't be blabbering
he couldn't be blabbering
we couldn't be blabbering
you couldn't be blabbering
they couldn't be blabbering	I couldn't have blabbered
you couldn't have blabbered
he couldn't have blabbered
we couldn't have blabbered
you couldn't have blabbered
they couldn't have blabbered	I couldn't have been blabbering
you couldn't have been blabbering
he couldn't have been blabbering
we couldn't have been blabbering
you couldn't have been blabbering
they couldn't have been blabbering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I blabber?
could you blabber?
could he blabber?
could we blabber?
could you blabber?
could they blabber? 	could I be blabbering?
could you be blabbering?
could he be blabbering?
could we be blabbering?
could you be blabbering?
could they be blabbering? 	could I have blabbered?
could you have blabbered?
could he have blabbered?
could we have blabbered?
could you have blabbered?
could they have blabbered? 	could I have been blabbering?
could you have been blabbering?
could he have been blabbering?
could we have been blabbering?
could you have been blabbering?
could they have been blabbering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I blabber?
couldn't you blabber?
couldn't he blabber?
couldn't we blabber?
couldn't you blabber?
couldn't they blabber? 	couldn't I be blabbering?
couldn't you be blabbering?
couldn't he be blabbering?
couldn't we be blabbering?
couldn't you be blabbering?
couldn't they be blabbering? 	couldn't I have blabbered?
couldn't you have blabbered?
couldn't he have blabbered?
couldn't we have blabbered?
couldn't you have blabbered?
couldn't they have blabbered? 	couldn't I have been blabbering?
couldn't you have been blabbering?
couldn't he have been blabbering?
couldn't we have been blabbering?
couldn't you have been blabbering?
couldn't they have been blabbering?