could remember
Regular verb: remember - remembered- remembered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could remember
you could remember
she could remember
we could remember
you could remember
they could remember 	I could be remembering
you could be remembering
she could be remembering
we could be remembering
you could be remembering
they could be remembering	I could have remembered
you could have remembered
she could have remembered
we could have remembered
you could have remembered
they could have remembered	I could have been remembering
you could have been remembering
she could have been remembering
we could have been remembering
you could have been remembering
they could have been remembering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't remember
you couldn't remember
she couldn't remember
we couldn't remember
you couldn't remember
they couldn't remember 	I couldn't be remembering
you couldn't be remembering
she couldn't be remembering
we couldn't be remembering
you couldn't be remembering
they couldn't be remembering	I couldn't have remembered
you couldn't have remembered
she couldn't have remembered
we couldn't have remembered
you couldn't have remembered
they couldn't have remembered	I couldn't have been remembering
you couldn't have been remembering
she couldn't have been remembering
we couldn't have been remembering
you couldn't have been remembering
they couldn't have been remembering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I remember?
could you remember?
could she remember?
could we remember?
could you remember?
could they remember? 	could I be remembering?
could you be remembering?
could she be remembering?
could we be remembering?
could you be remembering?
could they be remembering? 	could I have remembered?
could you have remembered?
could she have remembered?
could we have remembered?
could you have remembered?
could they have remembered? 	could I have been remembering?
could you have been remembering?
could she have been remembering?
could we have been remembering?
could you have been remembering?
could they have been remembering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I remember?
couldn't you remember?
couldn't she remember?
couldn't we remember?
couldn't you remember?
couldn't they remember? 	couldn't I be remembering?
couldn't you be remembering?
couldn't she be remembering?
couldn't we be remembering?
couldn't you be remembering?
couldn't they be remembering? 	couldn't I have remembered?
couldn't you have remembered?
couldn't she have remembered?
couldn't we have remembered?
couldn't you have remembered?
couldn't they have remembered? 	couldn't I have been remembering?
couldn't you have been remembering?
couldn't she have been remembering?
couldn't we have been remembering?
couldn't you have been remembering?
couldn't they have been remembering?