English verb conjugation
COULD INTERFERE

Regular verb: interfere - interfered - interfered

Affirmation

Simple form	V-ing form
I could interfere you could interfere he could interfere we could interfere you could interfere they could interfere	I could be interfering you could be interfering he could be interfering we could be interfering you could be interfering they could be interfering
Perfect	V-ing perfect
I could have interfered you could have interfered he could have interfered we could have interfered you could have interfered they could have interfered	I could have been interfering you could have been interfering he could have been interfering we could have been interfering you could have been interfering they could have been interfering

Negation

Simple form	V-ing form
I could not interfere you could not interfere he could not interfere we could not interfere you could not interfere they could not interfere	I could not be interfering you could not be interfering he could not be interfering we could not be interfering you could not be interfering they could not be interfering
Perfect	V-ing perfect
I could not have interfered you could not have interfered he could not have interfered we could not have interfered you could not have interfered they could not have interfered	I could not have been interfering you could not have been interfering he could not have been interfering we could not have been interfering you could not have been interfering they could not have been interfering

Interrogative form

Simple form	V-ing form
could I interfere? could you interfere? could he interfere? could we interfere? could you interfere? could they interfere?	could I be interfering? could you be interfering? could he be interfering? could we be interfering? could you be interfering? could they be interfering?
Perfect	V-ing perfect
could I have interfered? could you have interfered? could he have interfered? could we have interfered? could you have interfered? could they have interfered?	could I have been interfering? could you have been interfering? could he have been interfering? could we have been interfering? could you have been interfering? could they have been interfering?

Interro-negative form

Simple form	V-ing form
could I not interfere? could you not interfere? could he not interfere? could we not interfere? could you not interfere? could they not interfere?	could I not be interfering? could you not be interfering? could he not be interfering? could we not be interfering? could you not be interfering? could they not be interfering?
Perfect	V-ing perfect
could I not have interfered? could you not have interfered? could he not have interfered? could we not have interfered? could you not have interfered? could they not have interfered?	could I not have been interfering? could you not have been interfering? could he not have been interfering? could we not have been interfering? could you not have been interfering? could they not have been interfering?