I could begird you could begird he could begird we could begird you could begird they could begird
V-ing form
I could be begirding you could be begirding he could be begirding we could be begirding you could be begirding they could be begirding
Perfect
I could have begirded you could have begirded he 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 he 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 he 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 he 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 he 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 he 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 he begird? could we begird? could you begird? could they begird?
V-ing form
could I be begirding? could you be begirding? could he be begirding? could we be begirding? could you be begirding? could they be begirding?
Perfect
could I have begirded? could you have begirded? could he 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 he 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 he 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 he 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 he 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 he have been begirding? couldn't we have been begirding? couldn't you have been begirding? couldn't they have been begirding?