I could mope you could mope she could mope we could mope you could mope they could mope
V-ing form
I could be moping you could be moping she could be moping we could be moping you could be moping they could be moping
Perfect
I could have moped you could have moped she could have moped we could have moped you could have moped they could have moped
V-ing perfect
I could have been moping you could have been moping she could have been moping we could have been moping you could have been moping they could have been moping
Negation
Simple form
I couldn't mope you couldn't mope she couldn't mope we couldn't mope you couldn't mope they couldn't mope
V-ing form
I couldn't be moping you couldn't be moping she couldn't be moping we couldn't be moping you couldn't be moping they couldn't be moping
Perfect
I couldn't have moped you couldn't have moped she couldn't have moped we couldn't have moped you couldn't have moped they couldn't have moped
V-ing perfect
I couldn't have been moping you couldn't have been moping she couldn't have been moping we couldn't have been moping you couldn't have been moping they couldn't have been moping
Interrogative form
Simple form
could I mope? could you mope? could she mope? could we mope? could you mope? could they mope?
V-ing form
could I be moping? could you be moping? could she be moping? could we be moping? could you be moping? could they be moping?
Perfect
could I have moped? could you have moped? could she have moped? could we have moped? could you have moped? could they have moped?
V-ing perfect
could I have been moping? could you have been moping? could she have been moping? could we have been moping? could you have been moping? could they have been moping?
Interro-negative form
Simple form
couldn't I mope? couldn't you mope? couldn't she mope? couldn't we mope? couldn't you mope? couldn't they mope?
V-ing form
couldn't I be moping? couldn't you be moping? couldn't she be moping? couldn't we be moping? couldn't you be moping? couldn't they be moping?
Perfect
couldn't I have moped? couldn't you have moped? couldn't she have moped? couldn't we have moped? couldn't you have moped? couldn't they have moped?
V-ing perfect
couldn't I have been moping? couldn't you have been moping? couldn't she have been moping? couldn't we have been moping? couldn't you have been moping? couldn't they have been moping?