I could interpret you could interpret he could interpret we could interpret you could interpret they could interpret
V-ing form
I could be interpreting you could be interpreting he could be interpreting we could be interpreting you could be interpreting they could be interpreting
Perfect
I could have interpreted you could have interpreted he could have interpreted we could have interpreted you could have interpreted they could have interpreted
V-ing perfect
I could have been interpreting you could have been interpreting he could have been interpreting we could have been interpreting you could have been interpreting they could have been interpreting
Negation
Simple form
I could not interpret you could not interpret he could not interpret we could not interpret you could not interpret they could not interpret
V-ing form
I could not be interpreting you could not be interpreting he could not be interpreting we could not be interpreting you could not be interpreting they could not be interpreting
Perfect
I could not have interpreted you could not have interpreted he could not have interpreted we could not have interpreted you could not have interpreted they could not have interpreted
V-ing perfect
I could not have been interpreting you could not have been interpreting he could not have been interpreting we could not have been interpreting you could not have been interpreting they could not have been interpreting
Interrogative form
Simple form
could I interpret? could you interpret? could he interpret? could we interpret? could you interpret? could they interpret?
V-ing form
could I be interpreting? could you be interpreting? could he be interpreting? could we be interpreting? could you be interpreting? could they be interpreting?
Perfect
could I have interpreted? could you have interpreted? could he have interpreted? could we have interpreted? could you have interpreted? could they have interpreted?
V-ing perfect
could I have been interpreting? could you have been interpreting? could he have been interpreting? could we have been interpreting? could you have been interpreting? could they have been interpreting?
Interro-negative form
Simple form
could I not interpret? could you not interpret? could he not interpret? could we not interpret? could you not interpret? could they not interpret?
V-ing form
could I not be interpreting? could you not be interpreting? could he not be interpreting? could we not be interpreting? could you not be interpreting? could they not be interpreting?
Perfect
could I not have interpreted? could you not have interpreted? could he not have interpreted? could we not have interpreted? could you not have interpreted? could they not have interpreted?
V-ing perfect
could I not have been interpreting? could you not have been interpreting? could he not have been interpreting? could we not have been interpreting? could you not have been interpreting? could they not have been interpreting?