Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could interfere interfere you could interfere interfere she could interfere interfere we could interfere interfere you could interfere interfere they could interfere interfere
V-ing form
I could be interfere interfering you could be interfere interfering she could be interfere interfering we could be interfere interfering you could be interfere interfering they could be interfere interfering
Perfect
I could have interfere interfered you could have interfere interfered she could have interfere interfered we could have interfere interfered you could have interfere interfered they could have interfere interfered
V-ing perfect
I could have been interfere interfering you could have been interfere interfering she could have been interfere interfering we could have been interfere interfering you could have been interfere interfering they could have been interfere interfering
Negation
Simple form
I couldn't interfere interfere you couldn't interfere interfere she couldn't interfere interfere we couldn't interfere interfere you couldn't interfere interfere they couldn't interfere interfere
V-ing form
I couldn't be interfere interfering you couldn't be interfere interfering she couldn't be interfere interfering we couldn't be interfere interfering you couldn't be interfere interfering they couldn't be interfere interfering
Perfect
I couldn't have interfere interfered you couldn't have interfere interfered she couldn't have interfere interfered we couldn't have interfere interfered you couldn't have interfere interfered they couldn't have interfere interfered
V-ing perfect
I couldn't have been interfere interfering you couldn't have been interfere interfering she couldn't have been interfere interfering we couldn't have been interfere interfering you couldn't have been interfere interfering they couldn't have been interfere interfering
Interrogative form
Simple form
could I interfere interfere? could you interfere interfere? could she interfere interfere? could we interfere interfere? could you interfere interfere? could they interfere interfere?
V-ing form
could I be interfere interfering? could you be interfere interfering? could she be interfere interfering? could we be interfere interfering? could you be interfere interfering? could they be interfere interfering?
Perfect
could I have interfere interfered? could you have interfere interfered? could she have interfere interfered? could we have interfere interfered? could you have interfere interfered? could they have interfere interfered?
V-ing perfect
could I have been interfere interfering? could you have been interfere interfering? could she have been interfere interfering? could we have been interfere interfering? could you have been interfere interfering? could they have been interfere interfering?
Interro-negative form
Simple form
couldn't I interfere interfere? couldn't you interfere interfere? couldn't she interfere interfere? couldn't we interfere interfere? couldn't you interfere interfere? couldn't they interfere interfere?
V-ing form
couldn't I be interfere interfering? couldn't you be interfere interfering? couldn't she be interfere interfering? couldn't we be interfere interfering? couldn't you be interfere interfering? couldn't they be interfere interfering?
Perfect
couldn't I have interfere interfered? couldn't you have interfere interfered? couldn't she have interfere interfered? couldn't we have interfere interfered? couldn't you have interfere interfered? couldn't they have interfere interfered?
V-ing perfect
couldn't I have been interfere interfering? couldn't you have been interfere interfering? couldn't she have been interfere interfering? couldn't we have been interfere interfering? couldn't you have been interfere interfering? couldn't they have been interfere interfering?