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