English verb conjugation
OUGHT TO DULL

Regular verb: dull - dulled - dulled

Affirmation

Simple form	V-ing form
I ought to dull you ought to dull she ought to dull we ought to dull you ought to dull they ought to dull	I ought to be dulling you ought to be dulling she ought to be dulling we ought to be dulling you ought to be dulling they ought to be dulling
Perfect	V-ing perfect
I ought to have dulled you ought to have dulled she ought to have dulled we ought to have dulled you ought to have dulled they ought to have dulled	I ought to have been dulling you ought to have been dulling she ought to have been dulling we ought to have been dulling you ought to have been dulling they ought to have been dulling

Negation

Simple form	V-ing form
I oughtn't to dull you oughtn't to dull she oughtn't to dull we oughtn't to dull you oughtn't to dull they oughtn't to dull	I oughtn't to be dulling you oughtn't to be dulling she oughtn't to be dulling we oughtn't to be dulling you oughtn't to be dulling they oughtn't to be dulling
Perfect	V-ing perfect
I oughtn't to have dulled you oughtn't to have dulled she oughtn't to have dulled we oughtn't to have dulled you oughtn't to have dulled they oughtn't to have dulled	I oughtn't to have been dulling you oughtn't to have been dulling she oughtn't to have been dulling we oughtn't to have been dulling you oughtn't to have been dulling they oughtn't to have been dulling

Interrogative form

Simple form	V-ing form
ought to I dull? ought to you dull? ought to she dull? ought to we dull? ought to you dull? ought to they dull?	ought to I be dulling? ought to you be dulling? ought to she be dulling? ought to we be dulling? ought to you be dulling? ought to they be dulling?
Perfect	V-ing perfect
ought to I have dulled? ought to you have dulled? ought to she have dulled? ought to we have dulled? ought to you have dulled? ought to they have dulled?	ought to I have been dulling? ought to you have been dulling? ought to she have been dulling? ought to we have been dulling? ought to you have been dulling? ought to they have been dulling?

Interro-negative form

Simple form	V-ing form
oughtn't I to dull? oughtn't you to dull? oughtn't she to dull? oughtn't we to dull? oughtn't you to dull? oughtn't they to dull?	oughtn't I to be dulling? oughtn't you to be dulling? oughtn't she to be dulling? oughtn't we to be dulling? oughtn't you to be dulling? oughtn't they to be dulling?
Perfect	V-ing perfect
oughtn't I to have dulled? oughtn't you to have dulled? oughtn't she to have dulled? oughtn't we to have dulled? oughtn't you to have dulled? oughtn't they to have dulled?	oughtn't I to have been dulling? oughtn't you to have been dulling? oughtn't she to have been dulling? oughtn't we to have been dulling? oughtn't you to have been dulling? oughtn't they to have been dulling?