could cross-refer
Regular verb: cross-refer - cross-refered- cross-refered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cross-refer
you could cross-refer
he could cross-refer
we could cross-refer
you could cross-refer
they could cross-refer 	I could be cross-refering
you could be cross-refering
he could be cross-refering
we could be cross-refering
you could be cross-refering
they could be cross-refering	I could have cross-refered
you could have cross-refered
he could have cross-refered
we could have cross-refered
you could have cross-refered
they could have cross-refered	I could have been cross-refering
you could have been cross-refering
he could have been cross-refering
we could have been cross-refering
you could have been cross-refering
they could have been cross-refering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't cross-refer
you couldn't cross-refer
he couldn't cross-refer
we couldn't cross-refer
you couldn't cross-refer
they couldn't cross-refer 	I couldn't be cross-refering
you couldn't be cross-refering
he couldn't be cross-refering
we couldn't be cross-refering
you couldn't be cross-refering
they couldn't be cross-refering	I couldn't have cross-refered
you couldn't have cross-refered
he couldn't have cross-refered
we couldn't have cross-refered
you couldn't have cross-refered
they couldn't have cross-refered	I couldn't have been cross-refering
you couldn't have been cross-refering
he couldn't have been cross-refering
we couldn't have been cross-refering
you couldn't have been cross-refering
they couldn't have been cross-refering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cross-refer?
could you cross-refer?
could he cross-refer?
could we cross-refer?
could you cross-refer?
could they cross-refer? 	could I be cross-refering?
could you be cross-refering?
could he be cross-refering?
could we be cross-refering?
could you be cross-refering?
could they be cross-refering? 	could I have cross-refered?
could you have cross-refered?
could he have cross-refered?
could we have cross-refered?
could you have cross-refered?
could they have cross-refered? 	could I have been cross-refering?
could you have been cross-refering?
could he have been cross-refering?
could we have been cross-refering?
could you have been cross-refering?
could they have been cross-refering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I cross-refer?
couldn't you cross-refer?
couldn't he cross-refer?
couldn't we cross-refer?
couldn't you cross-refer?
couldn't they cross-refer? 	couldn't I be cross-refering?
couldn't you be cross-refering?
couldn't he be cross-refering?
couldn't we be cross-refering?
couldn't you be cross-refering?
couldn't they be cross-refering? 	couldn't I have cross-refered?
couldn't you have cross-refered?
couldn't he have cross-refered?
couldn't we have cross-refered?
couldn't you have cross-refered?
couldn't they have cross-refered? 	couldn't I have been cross-refering?
couldn't you have been cross-refering?
couldn't he have been cross-refering?
couldn't we have been cross-refering?
couldn't you have been cross-refering?
couldn't they have been cross-refering?