could glimmer
Regular verb: glimmer - glimmered- glimmered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could glimmer
you could glimmer
he could glimmer
we could glimmer
you could glimmer
they could glimmer 	I could be glimmering
you could be glimmering
he could be glimmering
we could be glimmering
you could be glimmering
they could be glimmering	I could have glimmered
you could have glimmered
he could have glimmered
we could have glimmered
you could have glimmered
they could have glimmered	I could have been glimmering
you could have been glimmering
he could have been glimmering
we could have been glimmering
you could have been glimmering
they could have been glimmering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't glimmer
you couldn't glimmer
he couldn't glimmer
we couldn't glimmer
you couldn't glimmer
they couldn't glimmer 	I couldn't be glimmering
you couldn't be glimmering
he couldn't be glimmering
we couldn't be glimmering
you couldn't be glimmering
they couldn't be glimmering	I couldn't have glimmered
you couldn't have glimmered
he couldn't have glimmered
we couldn't have glimmered
you couldn't have glimmered
they couldn't have glimmered	I couldn't have been glimmering
you couldn't have been glimmering
he couldn't have been glimmering
we couldn't have been glimmering
you couldn't have been glimmering
they couldn't have been glimmering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I glimmer?
could you glimmer?
could he glimmer?
could we glimmer?
could you glimmer?
could they glimmer? 	could I be glimmering?
could you be glimmering?
could he be glimmering?
could we be glimmering?
could you be glimmering?
could they be glimmering? 	could I have glimmered?
could you have glimmered?
could he have glimmered?
could we have glimmered?
could you have glimmered?
could they have glimmered? 	could I have been glimmering?
could you have been glimmering?
could he have been glimmering?
could we have been glimmering?
could you have been glimmering?
could they have been glimmering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I glimmer?
couldn't you glimmer?
couldn't he glimmer?
couldn't we glimmer?
couldn't you glimmer?
couldn't they glimmer? 	couldn't I be glimmering?
couldn't you be glimmering?
couldn't he be glimmering?
couldn't we be glimmering?
couldn't you be glimmering?
couldn't they be glimmering? 	couldn't I have glimmered?
couldn't you have glimmered?
couldn't he have glimmered?
couldn't we have glimmered?
couldn't you have glimmered?
couldn't they have glimmered? 	couldn't I have been glimmering?
couldn't you have been glimmering?
couldn't he have been glimmering?
couldn't we have been glimmering?
couldn't you have been glimmering?
couldn't they have been glimmering?