could space
Regular verb: space - spaced- spaced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could space
you could space
she could space
we could space
you could space
they could space 	I could be spacing
you could be spacing
she could be spacing
we could be spacing
you could be spacing
they could be spacing	I could have spaced
you could have spaced
she could have spaced
we could have spaced
you could have spaced
they could have spaced	I could have been spacing
you could have been spacing
she could have been spacing
we could have been spacing
you could have been spacing
they could have been spacing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't space
you couldn't space
she couldn't space
we couldn't space
you couldn't space
they couldn't space 	I couldn't be spacing
you couldn't be spacing
she couldn't be spacing
we couldn't be spacing
you couldn't be spacing
they couldn't be spacing	I couldn't have spaced
you couldn't have spaced
she couldn't have spaced
we couldn't have spaced
you couldn't have spaced
they couldn't have spaced	I couldn't have been spacing
you couldn't have been spacing
she couldn't have been spacing
we couldn't have been spacing
you couldn't have been spacing
they couldn't have been spacing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I space?
could you space?
could she space?
could we space?
could you space?
could they space? 	could I be spacing?
could you be spacing?
could she be spacing?
could we be spacing?
could you be spacing?
could they be spacing? 	could I have spaced?
could you have spaced?
could she have spaced?
could we have spaced?
could you have spaced?
could they have spaced? 	could I have been spacing?
could you have been spacing?
could she have been spacing?
could we have been spacing?
could you have been spacing?
could they have been spacing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I space?
couldn't you space?
couldn't she space?
couldn't we space?
couldn't you space?
couldn't they space? 	couldn't I be spacing?
couldn't you be spacing?
couldn't she be spacing?
couldn't we be spacing?
couldn't you be spacing?
couldn't they be spacing? 	couldn't I have spaced?
couldn't you have spaced?
couldn't she have spaced?
couldn't we have spaced?
couldn't you have spaced?
couldn't they have spaced? 	couldn't I have been spacing?
couldn't you have been spacing?
couldn't she have been spacing?
couldn't we have been spacing?
couldn't you have been spacing?
couldn't they have been spacing?