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