English verb conjugation
OUGHT TO TAIL

Regular verb: tail - tailed - tailed

Affirmation

Simple form	V-ing form
I ought to tail you ought to tail he ought to tail we ought to tail you ought to tail they ought to tail	I ought to be tailing you ought to be tailing he ought to be tailing we ought to be tailing you ought to be tailing they ought to be tailing
Perfect	V-ing perfect
I ought to have tailed you ought to have tailed he ought to have tailed we ought to have tailed you ought to have tailed they ought to have tailed	I ought to have been tailing you ought to have been tailing he ought to have been tailing we ought to have been tailing you ought to have been tailing they ought to have been tailing

Negation

Simple form	V-ing form
I oughtn't to tail you oughtn't to tail he oughtn't to tail we oughtn't to tail you oughtn't to tail they oughtn't to tail	I oughtn't to be tailing you oughtn't to be tailing he oughtn't to be tailing we oughtn't to be tailing you oughtn't to be tailing they oughtn't to be tailing
Perfect	V-ing perfect
I oughtn't to have tailed you oughtn't to have tailed he oughtn't to have tailed we oughtn't to have tailed you oughtn't to have tailed they oughtn't to have tailed	I oughtn't to have been tailing you oughtn't to have been tailing he oughtn't to have been tailing we oughtn't to have been tailing you oughtn't to have been tailing they oughtn't to have been tailing

Interrogative form

Simple form	V-ing form
ought to I tail? ought to you tail? ought to he tail? ought to we tail? ought to you tail? ought to they tail?	ought to I be tailing? ought to you be tailing? ought to he be tailing? ought to we be tailing? ought to you be tailing? ought to they be tailing?
Perfect	V-ing perfect
ought to I have tailed? ought to you have tailed? ought to he have tailed? ought to we have tailed? ought to you have tailed? ought to they have tailed?	ought to I have been tailing? ought to you have been tailing? ought to he have been tailing? ought to we have been tailing? ought to you have been tailing? ought to they have been tailing?

Interro-negative form

Simple form	V-ing form
oughtn't I to tail? oughtn't you to tail? oughtn't he to tail? oughtn't we to tail? oughtn't you to tail? oughtn't they to tail?	oughtn't I to be tailing? oughtn't you to be tailing? oughtn't he to be tailing? oughtn't we to be tailing? oughtn't you to be tailing? oughtn't they to be tailing?
Perfect	V-ing perfect
oughtn't I to have tailed? oughtn't you to have tailed? oughtn't he to have tailed? oughtn't we to have tailed? oughtn't you to have tailed? oughtn't they to have tailed?	oughtn't I to have been tailing? oughtn't you to have been tailing? oughtn't he to have been tailing? oughtn't we to have been tailing? oughtn't you to have been tailing? oughtn't they to have been tailing?