I could blot you could blot he could blot we could blot you could blot they could blot
V-ing form
I could be blotting you could be blotting he could be blotting we could be blotting you could be blotting they could be blotting
Perfect
I could have blotted you could have blotted he could have blotted we could have blotted you could have blotted they could have blotted
V-ing perfect
I could have been blotting you could have been blotting he could have been blotting we could have been blotting you could have been blotting they could have been blotting
Negation
Simple form
I could not blot you could not blot he could not blot we could not blot you could not blot they could not blot
V-ing form
I could not be blotting you could not be blotting he could not be blotting we could not be blotting you could not be blotting they could not be blotting
Perfect
I could not have blotted you could not have blotted he could not have blotted we could not have blotted you could not have blotted they could not have blotted
V-ing perfect
I could not have been blotting you could not have been blotting he could not have been blotting we could not have been blotting you could not have been blotting they could not have been blotting
Interrogative form
Simple form
could I blot? could you blot? could he blot? could we blot? could you blot? could they blot?
V-ing form
could I be blotting? could you be blotting? could he be blotting? could we be blotting? could you be blotting? could they be blotting?
Perfect
could I have blotted? could you have blotted? could he have blotted? could we have blotted? could you have blotted? could they have blotted?
V-ing perfect
could I have been blotting? could you have been blotting? could he have been blotting? could we have been blotting? could you have been blotting? could they have been blotting?
Interro-negative form
Simple form
could I not blot? could you not blot? could he not blot? could we not blot? could you not blot? could they not blot?
V-ing form
could I not be blotting? could you not be blotting? could he not be blotting? could we not be blotting? could you not be blotting? could they not be blotting?
Perfect
could I not have blotted? could you not have blotted? could he not have blotted? could we not have blotted? could you not have blotted? could they not have blotted?
V-ing perfect
could I not have been blotting? could you not have been blotting? could he not have been blotting? could we not have been blotting? could you not have been blotting? could they not have been blotting?