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