ought to swim
Irregular verb: swim - swam- swum

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to swim
you ought to swim
she ought to swim
we ought to swim
you ought to swim
they ought to swim 	I ought to be swimming
you ought to be swimming
she ought to be swimming
we ought to be swimming
you ought to be swimming
they ought to be swimming	I ought to have swum
you ought to have swum
she ought to have swum
we ought to have swum
you ought to have swum
they ought to have swum	I ought to have been swimming
you ought to have been swimming
she ought to have been swimming
we ought to have been swimming
you ought to have been swimming
they ought to have been swimming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to swim
you oughtn't to swim
she oughtn't to swim
we oughtn't to swim
you oughtn't to swim
they oughtn't to swim 	I oughtn't to be swimming
you oughtn't to be swimming
she oughtn't to be swimming
we oughtn't to be swimming
you oughtn't to be swimming
they oughtn't to be swimming	I oughtn't to have swum
you oughtn't to have swum
she oughtn't to have swum
we oughtn't to have swum
you oughtn't to have swum
they oughtn't to have swum	I oughtn't to have been swimming
you oughtn't to have been swimming
she oughtn't to have been swimming
we oughtn't to have been swimming
you oughtn't to have been swimming
they oughtn't to have been swimming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I swim?
ought to you swim?
ought to she swim?
ought to we swim?
ought to you swim?
ought to they swim? 	ought to I be swimming?
ought to you be swimming?
ought to she be swimming?
ought to we be swimming?
ought to you be swimming?
ought to they be swimming? 	ought to I have swum?
ought to you have swum?
ought to she have swum?
ought to we have swum?
ought to you have swum?
ought to they have swum? 	ought to I have been swimming?
ought to you have been swimming?
ought to she have been swimming?
ought to we have been swimming?
ought to you have been swimming?
ought to they have been swimming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to swim?
oughtn't you to swim?
oughtn't she to swim?
oughtn't we to swim?
oughtn't you to swim?
oughtn't they to swim? 	oughtn't I to be swimming?
oughtn't you to be swimming?
oughtn't she to be swimming?
oughtn't we to be swimming?
oughtn't you to be swimming?
oughtn't they to be swimming? 	oughtn't I to have swum?
oughtn't you to have swum?
oughtn't she to have swum?
oughtn't we to have swum?
oughtn't you to have swum?
oughtn't they to have swum? 	oughtn't I to have been swimming?
oughtn't you to have been swimming?
oughtn't she to have been swimming?
oughtn't we to have been swimming?
oughtn't you to have been swimming?
oughtn't they to have been swimming?