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