could glance
Regular verb: glance - glanced- glanced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could glance
you could glance
he could glance
we could glance
you could glance
they could glance 	I could be glancing
you could be glancing
he could be glancing
we could be glancing
you could be glancing
they could be glancing	I could have glanced
you could have glanced
he could have glanced
we could have glanced
you could have glanced
they could have glanced	I could have been glancing
you could have been glancing
he could have been glancing
we could have been glancing
you could have been glancing
they could have been glancing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't glance
you couldn't glance
he couldn't glance
we couldn't glance
you couldn't glance
they couldn't glance 	I couldn't be glancing
you couldn't be glancing
he couldn't be glancing
we couldn't be glancing
you couldn't be glancing
they couldn't be glancing	I couldn't have glanced
you couldn't have glanced
he couldn't have glanced
we couldn't have glanced
you couldn't have glanced
they couldn't have glanced	I couldn't have been glancing
you couldn't have been glancing
he couldn't have been glancing
we couldn't have been glancing
you couldn't have been glancing
they couldn't have been glancing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I glance?
could you glance?
could he glance?
could we glance?
could you glance?
could they glance? 	could I be glancing?
could you be glancing?
could he be glancing?
could we be glancing?
could you be glancing?
could they be glancing? 	could I have glanced?
could you have glanced?
could he have glanced?
could we have glanced?
could you have glanced?
could they have glanced? 	could I have been glancing?
could you have been glancing?
could he have been glancing?
could we have been glancing?
could you have been glancing?
could they have been glancing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I glance?
couldn't you glance?
couldn't he glance?
couldn't we glance?
couldn't you glance?
couldn't they glance? 	couldn't I be glancing?
couldn't you be glancing?
couldn't he be glancing?
couldn't we be glancing?
couldn't you be glancing?
couldn't they be glancing? 	couldn't I have glanced?
couldn't you have glanced?
couldn't he have glanced?
couldn't we have glanced?
couldn't you have glanced?
couldn't they have glanced? 	couldn't I have been glancing?
couldn't you have been glancing?
couldn't he have been glancing?
couldn't we have been glancing?
couldn't you have been glancing?
couldn't they have been glancing?