ought to sightsee
Regular verb: sightsee - sightseed- sightseed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to sightsee
you ought to sightsee
she ought to sightsee
we ought to sightsee
you ought to sightsee
they ought to sightsee 	I ought to be sightseeing
you ought to be sightseeing
she ought to be sightseeing
we ought to be sightseeing
you ought to be sightseeing
they ought to be sightseeing	I ought to have sightseed
you ought to have sightseed
she ought to have sightseed
we ought to have sightseed
you ought to have sightseed
they ought to have sightseed	I ought to have been sightseeing
you ought to have been sightseeing
she ought to have been sightseeing
we ought to have been sightseeing
you ought to have been sightseeing
they ought to have been sightseeing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to sightsee
you oughtn't to sightsee
she oughtn't to sightsee
we oughtn't to sightsee
you oughtn't to sightsee
they oughtn't to sightsee 	I oughtn't to be sightseeing
you oughtn't to be sightseeing
she oughtn't to be sightseeing
we oughtn't to be sightseeing
you oughtn't to be sightseeing
they oughtn't to be sightseeing	I oughtn't to have sightseed
you oughtn't to have sightseed
she oughtn't to have sightseed
we oughtn't to have sightseed
you oughtn't to have sightseed
they oughtn't to have sightseed	I oughtn't to have been sightseeing
you oughtn't to have been sightseeing
she oughtn't to have been sightseeing
we oughtn't to have been sightseeing
you oughtn't to have been sightseeing
they oughtn't to have been sightseeing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I sightsee?
ought to you sightsee?
ought to she sightsee?
ought to we sightsee?
ought to you sightsee?
ought to they sightsee? 	ought to I be sightseeing?
ought to you be sightseeing?
ought to she be sightseeing?
ought to we be sightseeing?
ought to you be sightseeing?
ought to they be sightseeing? 	ought to I have sightseed?
ought to you have sightseed?
ought to she have sightseed?
ought to we have sightseed?
ought to you have sightseed?
ought to they have sightseed? 	ought to I have been sightseeing?
ought to you have been sightseeing?
ought to she have been sightseeing?
ought to we have been sightseeing?
ought to you have been sightseeing?
ought to they have been sightseeing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to sightsee?
oughtn't you to sightsee?
oughtn't she to sightsee?
oughtn't we to sightsee?
oughtn't you to sightsee?
oughtn't they to sightsee? 	oughtn't I to be sightseeing?
oughtn't you to be sightseeing?
oughtn't she to be sightseeing?
oughtn't we to be sightseeing?
oughtn't you to be sightseeing?
oughtn't they to be sightseeing? 	oughtn't I to have sightseed?
oughtn't you to have sightseed?
oughtn't she to have sightseed?
oughtn't we to have sightseed?
oughtn't you to have sightseed?
oughtn't they to have sightseed? 	oughtn't I to have been sightseeing?
oughtn't you to have been sightseeing?
oughtn't she to have been sightseeing?
oughtn't we to have been sightseeing?
oughtn't you to have been sightseeing?
oughtn't they to have been sightseeing?