I could bulge you could bulge he could bulge we could bulge you could bulge they could bulge
V-ing form
I could be bulging you could be bulging he could be bulging we could be bulging you could be bulging they could be bulging
Perfect
I could have bulged you could have bulged he could have bulged we could have bulged you could have bulged they could have bulged
V-ing perfect
I could have been bulging you could have been bulging he could have been bulging we could have been bulging you could have been bulging they could have been bulging
Negation
Simple form
I couldn't bulge you couldn't bulge he couldn't bulge we couldn't bulge you couldn't bulge they couldn't bulge
V-ing form
I couldn't be bulging you couldn't be bulging he couldn't be bulging we couldn't be bulging you couldn't be bulging they couldn't be bulging
Perfect
I couldn't have bulged you couldn't have bulged he couldn't have bulged we couldn't have bulged you couldn't have bulged they couldn't have bulged
V-ing perfect
I couldn't have been bulging you couldn't have been bulging he couldn't have been bulging we couldn't have been bulging you couldn't have been bulging they couldn't have been bulging
Interrogative form
Simple form
could I bulge? could you bulge? could he bulge? could we bulge? could you bulge? could they bulge?
V-ing form
could I be bulging? could you be bulging? could he be bulging? could we be bulging? could you be bulging? could they be bulging?
Perfect
could I have bulged? could you have bulged? could he have bulged? could we have bulged? could you have bulged? could they have bulged?
V-ing perfect
could I have been bulging? could you have been bulging? could he have been bulging? could we have been bulging? could you have been bulging? could they have been bulging?
Interro-negative form
Simple form
couldn't I bulge? couldn't you bulge? couldn't he bulge? couldn't we bulge? couldn't you bulge? couldn't they bulge?
V-ing form
couldn't I be bulging? couldn't you be bulging? couldn't he be bulging? couldn't we be bulging? couldn't you be bulging? couldn't they be bulging?
Perfect
couldn't I have bulged? couldn't you have bulged? couldn't he have bulged? couldn't we have bulged? couldn't you have bulged? couldn't they have bulged?
V-ing perfect
couldn't I have been bulging? couldn't you have been bulging? couldn't he have been bulging? couldn't we have been bulging? couldn't you have been bulging? couldn't they have been bulging?