I could blunt you could blunt she could blunt we could blunt you could blunt they could blunt
V-ing form
I could be blunting you could be blunting she could be blunting we could be blunting you could be blunting they could be blunting
Perfect
I could have blunted you could have blunted she could have blunted we could have blunted you could have blunted they could have blunted
V-ing perfect
I could have been blunting you could have been blunting she could have been blunting we could have been blunting you could have been blunting they could have been blunting
Negation
Simple form
I couldn't blunt you couldn't blunt she couldn't blunt we couldn't blunt you couldn't blunt they couldn't blunt
V-ing form
I couldn't be blunting you couldn't be blunting she couldn't be blunting we couldn't be blunting you couldn't be blunting they couldn't be blunting
Perfect
I couldn't have blunted you couldn't have blunted she couldn't have blunted we couldn't have blunted you couldn't have blunted they couldn't have blunted
V-ing perfect
I couldn't have been blunting you couldn't have been blunting she couldn't have been blunting we couldn't have been blunting you couldn't have been blunting they couldn't have been blunting
Interrogative form
Simple form
could I blunt? could you blunt? could she blunt? could we blunt? could you blunt? could they blunt?
V-ing form
could I be blunting? could you be blunting? could she be blunting? could we be blunting? could you be blunting? could they be blunting?
Perfect
could I have blunted? could you have blunted? could she have blunted? could we have blunted? could you have blunted? could they have blunted?
V-ing perfect
could I have been blunting? could you have been blunting? could she have been blunting? could we have been blunting? could you have been blunting? could they have been blunting?
Interro-negative form
Simple form
couldn't I blunt? couldn't you blunt? couldn't she blunt? couldn't we blunt? couldn't you blunt? couldn't they blunt?
V-ing form
couldn't I be blunting? couldn't you be blunting? couldn't she be blunting? couldn't we be blunting? couldn't you be blunting? couldn't they be blunting?
Perfect
couldn't I have blunted? couldn't you have blunted? couldn't she have blunted? couldn't we have blunted? couldn't you have blunted? couldn't they have blunted?
V-ing perfect
couldn't I have been blunting? couldn't you have been blunting? couldn't she have been blunting? couldn't we have been blunting? couldn't you have been blunting? couldn't they have been blunting?