ought to thumb
Regular verb: thumb - thumbed- thumbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to thumb
you ought to thumb
she ought to thumb
we ought to thumb
you ought to thumb
they ought to thumb 	I ought to be thumbing
you ought to be thumbing
she ought to be thumbing
we ought to be thumbing
you ought to be thumbing
they ought to be thumbing	I ought to have thumbed
you ought to have thumbed
she ought to have thumbed
we ought to have thumbed
you ought to have thumbed
they ought to have thumbed	I ought to have been thumbing
you ought to have been thumbing
she ought to have been thumbing
we ought to have been thumbing
you ought to have been thumbing
they ought to have been thumbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to thumb
you oughtn't to thumb
she oughtn't to thumb
we oughtn't to thumb
you oughtn't to thumb
they oughtn't to thumb 	I oughtn't to be thumbing
you oughtn't to be thumbing
she oughtn't to be thumbing
we oughtn't to be thumbing
you oughtn't to be thumbing
they oughtn't to be thumbing	I oughtn't to have thumbed
you oughtn't to have thumbed
she oughtn't to have thumbed
we oughtn't to have thumbed
you oughtn't to have thumbed
they oughtn't to have thumbed	I oughtn't to have been thumbing
you oughtn't to have been thumbing
she oughtn't to have been thumbing
we oughtn't to have been thumbing
you oughtn't to have been thumbing
they oughtn't to have been thumbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I thumb?
ought to you thumb?
ought to she thumb?
ought to we thumb?
ought to you thumb?
ought to they thumb? 	ought to I be thumbing?
ought to you be thumbing?
ought to she be thumbing?
ought to we be thumbing?
ought to you be thumbing?
ought to they be thumbing? 	ought to I have thumbed?
ought to you have thumbed?
ought to she have thumbed?
ought to we have thumbed?
ought to you have thumbed?
ought to they have thumbed? 	ought to I have been thumbing?
ought to you have been thumbing?
ought to she have been thumbing?
ought to we have been thumbing?
ought to you have been thumbing?
ought to they have been thumbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to thumb?
oughtn't you to thumb?
oughtn't she to thumb?
oughtn't we to thumb?
oughtn't you to thumb?
oughtn't they to thumb? 	oughtn't I to be thumbing?
oughtn't you to be thumbing?
oughtn't she to be thumbing?
oughtn't we to be thumbing?
oughtn't you to be thumbing?
oughtn't they to be thumbing? 	oughtn't I to have thumbed?
oughtn't you to have thumbed?
oughtn't she to have thumbed?
oughtn't we to have thumbed?
oughtn't you to have thumbed?
oughtn't they to have thumbed? 	oughtn't I to have been thumbing?
oughtn't you to have been thumbing?
oughtn't she to have been thumbing?
oughtn't we to have been thumbing?
oughtn't you to have been thumbing?
oughtn't they to have been thumbing?