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