could prenumber
Regular verb: prenumber - prenumbered- prenumbered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could prenumber
you could prenumber
he could prenumber
we could prenumber
you could prenumber
they could prenumber 	I could be prenumbering
you could be prenumbering
he could be prenumbering
we could be prenumbering
you could be prenumbering
they could be prenumbering	I could have prenumbered
you could have prenumbered
he could have prenumbered
we could have prenumbered
you could have prenumbered
they could have prenumbered	I could have been prenumbering
you could have been prenumbering
he could have been prenumbering
we could have been prenumbering
you could have been prenumbering
they could have been prenumbering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't prenumber
you couldn't prenumber
he couldn't prenumber
we couldn't prenumber
you couldn't prenumber
they couldn't prenumber 	I couldn't be prenumbering
you couldn't be prenumbering
he couldn't be prenumbering
we couldn't be prenumbering
you couldn't be prenumbering
they couldn't be prenumbering	I couldn't have prenumbered
you couldn't have prenumbered
he couldn't have prenumbered
we couldn't have prenumbered
you couldn't have prenumbered
they couldn't have prenumbered	I couldn't have been prenumbering
you couldn't have been prenumbering
he couldn't have been prenumbering
we couldn't have been prenumbering
you couldn't have been prenumbering
they couldn't have been prenumbering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I prenumber?
could you prenumber?
could he prenumber?
could we prenumber?
could you prenumber?
could they prenumber? 	could I be prenumbering?
could you be prenumbering?
could he be prenumbering?
could we be prenumbering?
could you be prenumbering?
could they be prenumbering? 	could I have prenumbered?
could you have prenumbered?
could he have prenumbered?
could we have prenumbered?
could you have prenumbered?
could they have prenumbered? 	could I have been prenumbering?
could you have been prenumbering?
could he have been prenumbering?
could we have been prenumbering?
could you have been prenumbering?
could they have been prenumbering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I prenumber?
couldn't you prenumber?
couldn't he prenumber?
couldn't we prenumber?
couldn't you prenumber?
couldn't they prenumber? 	couldn't I be prenumbering?
couldn't you be prenumbering?
couldn't he be prenumbering?
couldn't we be prenumbering?
couldn't you be prenumbering?
couldn't they be prenumbering? 	couldn't I have prenumbered?
couldn't you have prenumbered?
couldn't he have prenumbered?
couldn't we have prenumbered?
couldn't you have prenumbered?
couldn't they have prenumbered? 	couldn't I have been prenumbering?
couldn't you have been prenumbering?
couldn't he have been prenumbering?
couldn't we have been prenumbering?
couldn't you have been prenumbering?
couldn't they have been prenumbering?