ought to whistle
Regular verb: whistle - whistled- whistled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to whistle
you ought to whistle
she ought to whistle
we ought to whistle
you ought to whistle
they ought to whistle 	I ought to be whistling
you ought to be whistling
she ought to be whistling
we ought to be whistling
you ought to be whistling
they ought to be whistling	I ought to have whistled
you ought to have whistled
she ought to have whistled
we ought to have whistled
you ought to have whistled
they ought to have whistled	I ought to have been whistling
you ought to have been whistling
she ought to have been whistling
we ought to have been whistling
you ought to have been whistling
they ought to have been whistling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to whistle
you oughtn't to whistle
she oughtn't to whistle
we oughtn't to whistle
you oughtn't to whistle
they oughtn't to whistle 	I oughtn't to be whistling
you oughtn't to be whistling
she oughtn't to be whistling
we oughtn't to be whistling
you oughtn't to be whistling
they oughtn't to be whistling	I oughtn't to have whistled
you oughtn't to have whistled
she oughtn't to have whistled
we oughtn't to have whistled
you oughtn't to have whistled
they oughtn't to have whistled	I oughtn't to have been whistling
you oughtn't to have been whistling
she oughtn't to have been whistling
we oughtn't to have been whistling
you oughtn't to have been whistling
they oughtn't to have been whistling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I whistle?
ought to you whistle?
ought to she whistle?
ought to we whistle?
ought to you whistle?
ought to they whistle? 	ought to I be whistling?
ought to you be whistling?
ought to she be whistling?
ought to we be whistling?
ought to you be whistling?
ought to they be whistling? 	ought to I have whistled?
ought to you have whistled?
ought to she have whistled?
ought to we have whistled?
ought to you have whistled?
ought to they have whistled? 	ought to I have been whistling?
ought to you have been whistling?
ought to she have been whistling?
ought to we have been whistling?
ought to you have been whistling?
ought to they have been whistling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to whistle?
oughtn't you to whistle?
oughtn't she to whistle?
oughtn't we to whistle?
oughtn't you to whistle?
oughtn't they to whistle? 	oughtn't I to be whistling?
oughtn't you to be whistling?
oughtn't she to be whistling?
oughtn't we to be whistling?
oughtn't you to be whistling?
oughtn't they to be whistling? 	oughtn't I to have whistled?
oughtn't you to have whistled?
oughtn't she to have whistled?
oughtn't we to have whistled?
oughtn't you to have whistled?
oughtn't they to have whistled? 	oughtn't I to have been whistling?
oughtn't you to have been whistling?
oughtn't she to have been whistling?
oughtn't we to have been whistling?
oughtn't you to have been whistling?
oughtn't they to have been whistling?