ought to eavesdrop
Regular verb: eavesdrop - eavesdropped- eavesdropped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to eavesdrop
you ought to eavesdrop
he ought to eavesdrop
we ought to eavesdrop
you ought to eavesdrop
they ought to eavesdrop 	I ought to be eavesdropping
you ought to be eavesdropping
he ought to be eavesdropping
we ought to be eavesdropping
you ought to be eavesdropping
they ought to be eavesdropping	I ought to have eavesdropped
you ought to have eavesdropped
he ought to have eavesdropped
we ought to have eavesdropped
you ought to have eavesdropped
they ought to have eavesdropped	I ought to have been eavesdropping
you ought to have been eavesdropping
he ought to have been eavesdropping
we ought to have been eavesdropping
you ought to have been eavesdropping
they ought to have been eavesdropping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to eavesdrop
you oughtn't to eavesdrop
he oughtn't to eavesdrop
we oughtn't to eavesdrop
you oughtn't to eavesdrop
they oughtn't to eavesdrop 	I oughtn't to be eavesdropping
you oughtn't to be eavesdropping
he oughtn't to be eavesdropping
we oughtn't to be eavesdropping
you oughtn't to be eavesdropping
they oughtn't to be eavesdropping	I oughtn't to have eavesdropped
you oughtn't to have eavesdropped
he oughtn't to have eavesdropped
we oughtn't to have eavesdropped
you oughtn't to have eavesdropped
they oughtn't to have eavesdropped	I oughtn't to have been eavesdropping
you oughtn't to have been eavesdropping
he oughtn't to have been eavesdropping
we oughtn't to have been eavesdropping
you oughtn't to have been eavesdropping
they oughtn't to have been eavesdropping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I eavesdrop?
ought to you eavesdrop?
ought to he eavesdrop?
ought to we eavesdrop?
ought to you eavesdrop?
ought to they eavesdrop? 	ought to I be eavesdropping?
ought to you be eavesdropping?
ought to he be eavesdropping?
ought to we be eavesdropping?
ought to you be eavesdropping?
ought to they be eavesdropping? 	ought to I have eavesdropped?
ought to you have eavesdropped?
ought to he have eavesdropped?
ought to we have eavesdropped?
ought to you have eavesdropped?
ought to they have eavesdropped? 	ought to I have been eavesdropping?
ought to you have been eavesdropping?
ought to he have been eavesdropping?
ought to we have been eavesdropping?
ought to you have been eavesdropping?
ought to they have been eavesdropping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to eavesdrop?
oughtn't you to eavesdrop?
oughtn't he to eavesdrop?
oughtn't we to eavesdrop?
oughtn't you to eavesdrop?
oughtn't they to eavesdrop? 	oughtn't I to be eavesdropping?
oughtn't you to be eavesdropping?
oughtn't he to be eavesdropping?
oughtn't we to be eavesdropping?
oughtn't you to be eavesdropping?
oughtn't they to be eavesdropping? 	oughtn't I to have eavesdropped?
oughtn't you to have eavesdropped?
oughtn't he to have eavesdropped?
oughtn't we to have eavesdropped?
oughtn't you to have eavesdropped?
oughtn't they to have eavesdropped? 	oughtn't I to have been eavesdropping?
oughtn't you to have been eavesdropping?
oughtn't he to have been eavesdropping?
oughtn't we to have been eavesdropping?
oughtn't you to have been eavesdropping?
oughtn't they to have been eavesdropping?