ought to doubt
Regular verb: doubt - doubted- doubted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to doubt
you ought to doubt
he ought to doubt
we ought to doubt
you ought to doubt
they ought to doubt 	I ought to be doubting
you ought to be doubting
he ought to be doubting
we ought to be doubting
you ought to be doubting
they ought to be doubting	I ought to have doubted
you ought to have doubted
he ought to have doubted
we ought to have doubted
you ought to have doubted
they ought to have doubted	I ought to have been doubting
you ought to have been doubting
he ought to have been doubting
we ought to have been doubting
you ought to have been doubting
they ought to have been doubting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to doubt
you oughtn't to doubt
he oughtn't to doubt
we oughtn't to doubt
you oughtn't to doubt
they oughtn't to doubt 	I oughtn't to be doubting
you oughtn't to be doubting
he oughtn't to be doubting
we oughtn't to be doubting
you oughtn't to be doubting
they oughtn't to be doubting	I oughtn't to have doubted
you oughtn't to have doubted
he oughtn't to have doubted
we oughtn't to have doubted
you oughtn't to have doubted
they oughtn't to have doubted	I oughtn't to have been doubting
you oughtn't to have been doubting
he oughtn't to have been doubting
we oughtn't to have been doubting
you oughtn't to have been doubting
they oughtn't to have been doubting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I doubt?
ought to you doubt?
ought to he doubt?
ought to we doubt?
ought to you doubt?
ought to they doubt? 	ought to I be doubting?
ought to you be doubting?
ought to he be doubting?
ought to we be doubting?
ought to you be doubting?
ought to they be doubting? 	ought to I have doubted?
ought to you have doubted?
ought to he have doubted?
ought to we have doubted?
ought to you have doubted?
ought to they have doubted? 	ought to I have been doubting?
ought to you have been doubting?
ought to he have been doubting?
ought to we have been doubting?
ought to you have been doubting?
ought to they have been doubting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to doubt?
oughtn't you to doubt?
oughtn't he to doubt?
oughtn't we to doubt?
oughtn't you to doubt?
oughtn't they to doubt? 	oughtn't I to be doubting?
oughtn't you to be doubting?
oughtn't he to be doubting?
oughtn't we to be doubting?
oughtn't you to be doubting?
oughtn't they to be doubting? 	oughtn't I to have doubted?
oughtn't you to have doubted?
oughtn't he to have doubted?
oughtn't we to have doubted?
oughtn't you to have doubted?
oughtn't they to have doubted? 	oughtn't I to have been doubting?
oughtn't you to have been doubting?
oughtn't he to have been doubting?
oughtn't we to have been doubting?
oughtn't you to have been doubting?
oughtn't they to have been doubting?