I can uncover you can uncover he can uncover we can uncover you can uncover they can uncover
V-ing form
I can be uncovering you can be uncovering he can be uncovering we can be uncovering you can be uncovering they can be uncovering
Perfect
I can have uncovered you can have uncovered he can have uncovered we can have uncovered you can have uncovered they can have uncovered
V-ing perfect
I can have been uncovering you can have been uncovering he can have been uncovering we can have been uncovering you can have been uncovering they can have been uncovering
Negation
Simple form
I can't uncover you can't uncover he can't uncover we can't uncover you can't uncover they can't uncover
V-ing form
I can't be uncovering you can't be uncovering he can't be uncovering we can't be uncovering you can't be uncovering they can't be uncovering
Perfect
I can't have uncovered you can't have uncovered he can't have uncovered we can't have uncovered you can't have uncovered they can't have uncovered
V-ing perfect
I can't have been uncovering you can't have been uncovering he can't have been uncovering we can't have been uncovering you can't have been uncovering they can't have been uncovering
Interrogative form
Simple form
can I uncover? can you uncover? can he uncover? can we uncover? can you uncover? can they uncover?
V-ing form
can I be uncovering? can you be uncovering? can he be uncovering? can we be uncovering? can you be uncovering? can they be uncovering?
Perfect
can I have uncovered? can you have uncovered? can he have uncovered? can we have uncovered? can you have uncovered? can they have uncovered?
V-ing perfect
can I have been uncovering? can you have been uncovering? can he have been uncovering? can we have been uncovering? can you have been uncovering? can they have been uncovering?
Interro-negative form
Simple form
can't I uncover? can't you uncover? can't he uncover? can't we uncover? can't you uncover? can't they uncover?
V-ing form
can't I be uncovering? can't you be uncovering? can't he be uncovering? can't we be uncovering? can't you be uncovering? can't they be uncovering?
Perfect
can't I have uncovered? can't you have uncovered? can't he have uncovered? can't we have uncovered? can't you have uncovered? can't they have uncovered?
V-ing perfect
can't I have been uncovering? can't you have been uncovering? can't he have been uncovering? can't we have been uncovering? can't you have been uncovering? can't they have been uncovering?