ought to thin
Regular verb: thin - thinned- thinned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to thin
you ought to thin
he ought to thin
we ought to thin
you ought to thin
they ought to thin 	I ought to be thinning
you ought to be thinning
he ought to be thinning
we ought to be thinning
you ought to be thinning
they ought to be thinning	I ought to have thinned
you ought to have thinned
he ought to have thinned
we ought to have thinned
you ought to have thinned
they ought to have thinned	I ought to have been thinning
you ought to have been thinning
he ought to have been thinning
we ought to have been thinning
you ought to have been thinning
they ought to have been thinning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to thin
you oughtn't to thin
he oughtn't to thin
we oughtn't to thin
you oughtn't to thin
they oughtn't to thin 	I oughtn't to be thinning
you oughtn't to be thinning
he oughtn't to be thinning
we oughtn't to be thinning
you oughtn't to be thinning
they oughtn't to be thinning	I oughtn't to have thinned
you oughtn't to have thinned
he oughtn't to have thinned
we oughtn't to have thinned
you oughtn't to have thinned
they oughtn't to have thinned	I oughtn't to have been thinning
you oughtn't to have been thinning
he oughtn't to have been thinning
we oughtn't to have been thinning
you oughtn't to have been thinning
they oughtn't to have been thinning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I thin?
ought to you thin?
ought to he thin?
ought to we thin?
ought to you thin?
ought to they thin? 	ought to I be thinning?
ought to you be thinning?
ought to he be thinning?
ought to we be thinning?
ought to you be thinning?
ought to they be thinning? 	ought to I have thinned?
ought to you have thinned?
ought to he have thinned?
ought to we have thinned?
ought to you have thinned?
ought to they have thinned? 	ought to I have been thinning?
ought to you have been thinning?
ought to he have been thinning?
ought to we have been thinning?
ought to you have been thinning?
ought to they have been thinning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to thin?
oughtn't you to thin?
oughtn't he to thin?
oughtn't we to thin?
oughtn't you to thin?
oughtn't they to thin? 	oughtn't I to be thinning?
oughtn't you to be thinning?
oughtn't he to be thinning?
oughtn't we to be thinning?
oughtn't you to be thinning?
oughtn't they to be thinning? 	oughtn't I to have thinned?
oughtn't you to have thinned?
oughtn't he to have thinned?
oughtn't we to have thinned?
oughtn't you to have thinned?
oughtn't they to have thinned? 	oughtn't I to have been thinning?
oughtn't you to have been thinning?
oughtn't he to have been thinning?
oughtn't we to have been thinning?
oughtn't you to have been thinning?
oughtn't they to have been thinning?