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