could cohere
Regular verb: cohere - cohered- cohered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cohere
you could cohere
he could cohere
we could cohere
you could cohere
they could cohere 	I could be cohering
you could be cohering
he could be cohering
we could be cohering
you could be cohering
they could be cohering	I could have cohered
you could have cohered
he could have cohered
we could have cohered
you could have cohered
they could have cohered	I could have been cohering
you could have been cohering
he could have been cohering
we could have been cohering
you could have been cohering
they could have been cohering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't cohere
you couldn't cohere
he couldn't cohere
we couldn't cohere
you couldn't cohere
they couldn't cohere 	I couldn't be cohering
you couldn't be cohering
he couldn't be cohering
we couldn't be cohering
you couldn't be cohering
they couldn't be cohering	I couldn't have cohered
you couldn't have cohered
he couldn't have cohered
we couldn't have cohered
you couldn't have cohered
they couldn't have cohered	I couldn't have been cohering
you couldn't have been cohering
he couldn't have been cohering
we couldn't have been cohering
you couldn't have been cohering
they couldn't have been cohering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cohere?
could you cohere?
could he cohere?
could we cohere?
could you cohere?
could they cohere? 	could I be cohering?
could you be cohering?
could he be cohering?
could we be cohering?
could you be cohering?
could they be cohering? 	could I have cohered?
could you have cohered?
could he have cohered?
could we have cohered?
could you have cohered?
could they have cohered? 	could I have been cohering?
could you have been cohering?
could he have been cohering?
could we have been cohering?
could you have been cohering?
could they have been cohering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I cohere?
couldn't you cohere?
couldn't he cohere?
couldn't we cohere?
couldn't you cohere?
couldn't they cohere? 	couldn't I be cohering?
couldn't you be cohering?
couldn't he be cohering?
couldn't we be cohering?
couldn't you be cohering?
couldn't they be cohering? 	couldn't I have cohered?
couldn't you have cohered?
couldn't he have cohered?
couldn't we have cohered?
couldn't you have cohered?
couldn't they have cohered? 	couldn't I have been cohering?
couldn't you have been cohering?
couldn't he have been cohering?
couldn't we have been cohering?
couldn't you have been cohering?
couldn't they have been cohering?