ought to interfere
Regular verb: interfere - interfered- interfered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to interfere
you ought to interfere
she ought to interfere
we ought to interfere
you ought to interfere
they ought to interfere 	I ought to be interfering
you ought to be interfering
she ought to be interfering
we ought to be interfering
you ought to be interfering
they ought to be interfering	I ought to have interfered
you ought to have interfered
she ought to have interfered
we ought to have interfered
you ought to have interfered
they ought to have interfered	I ought to have been interfering
you ought to have been interfering
she ought to have been interfering
we ought to have been interfering
you ought to have been interfering
they ought to have been interfering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to interfere
you oughtn't to interfere
she oughtn't to interfere
we oughtn't to interfere
you oughtn't to interfere
they oughtn't to interfere 	I oughtn't to be interfering
you oughtn't to be interfering
she oughtn't to be interfering
we oughtn't to be interfering
you oughtn't to be interfering
they oughtn't to be interfering	I oughtn't to have interfered
you oughtn't to have interfered
she oughtn't to have interfered
we oughtn't to have interfered
you oughtn't to have interfered
they oughtn't to have interfered	I oughtn't to have been interfering
you oughtn't to have been interfering
she oughtn't to have been interfering
we oughtn't to have been interfering
you oughtn't to have been interfering
they oughtn't to have been interfering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I interfere?
ought to you interfere?
ought to she interfere?
ought to we interfere?
ought to you interfere?
ought to they interfere? 	ought to I be interfering?
ought to you be interfering?
ought to she be interfering?
ought to we be interfering?
ought to you be interfering?
ought to they be interfering? 	ought to I have interfered?
ought to you have interfered?
ought to she have interfered?
ought to we have interfered?
ought to you have interfered?
ought to they have interfered? 	ought to I have been interfering?
ought to you have been interfering?
ought to she have been interfering?
ought to we have been interfering?
ought to you have been interfering?
ought to they have been interfering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to interfere?
oughtn't you to interfere?
oughtn't she to interfere?
oughtn't we to interfere?
oughtn't you to interfere?
oughtn't they to interfere? 	oughtn't I to be interfering?
oughtn't you to be interfering?
oughtn't she to be interfering?
oughtn't we to be interfering?
oughtn't you to be interfering?
oughtn't they to be interfering? 	oughtn't I to have interfered?
oughtn't you to have interfered?
oughtn't she to have interfered?
oughtn't we to have interfered?
oughtn't you to have interfered?
oughtn't they to have interfered? 	oughtn't I to have been interfering?
oughtn't you to have been interfering?
oughtn't she to have been interfering?
oughtn't we to have been interfering?
oughtn't you to have been interfering?
oughtn't they to have been interfering?