I could blurt you could blurt he could blurt we could blurt you could blurt they could blurt
V-ing form
I could be blurting you could be blurting he could be blurting we could be blurting you could be blurting they could be blurting
Perfect
I could have blurted you could have blurted he could have blurted we could have blurted you could have blurted they could have blurted
V-ing perfect
I could have been blurting you could have been blurting he could have been blurting we could have been blurting you could have been blurting they could have been blurting
Negation
Simple form
I could not blurt you could not blurt he could not blurt we could not blurt you could not blurt they could not blurt
V-ing form
I could not be blurting you could not be blurting he could not be blurting we could not be blurting you could not be blurting they could not be blurting
Perfect
I could not have blurted you could not have blurted he could not have blurted we could not have blurted you could not have blurted they could not have blurted
V-ing perfect
I could not have been blurting you could not have been blurting he could not have been blurting we could not have been blurting you could not have been blurting they could not have been blurting
Interrogative form
Simple form
could I blurt? could you blurt? could he blurt? could we blurt? could you blurt? could they blurt?
V-ing form
could I be blurting? could you be blurting? could he be blurting? could we be blurting? could you be blurting? could they be blurting?
Perfect
could I have blurted? could you have blurted? could he have blurted? could we have blurted? could you have blurted? could they have blurted?
V-ing perfect
could I have been blurting? could you have been blurting? could he have been blurting? could we have been blurting? could you have been blurting? could they have been blurting?
Interro-negative form
Simple form
could I not blurt? could you not blurt? could he not blurt? could we not blurt? could you not blurt? could they not blurt?
V-ing form
could I not be blurting? could you not be blurting? could he not be blurting? could we not be blurting? could you not be blurting? could they not be blurting?
Perfect
could I not have blurted? could you not have blurted? could he not have blurted? could we not have blurted? could you not have blurted? could they not have blurted?
V-ing perfect
could I not have been blurting? could you not have been blurting? could he not have been blurting? could we not have been blurting? could you not have been blurting? could they not have been blurting?