English verb conjugation
OUGHT TO CHALK

Regular verb: chalk - chalked - chalked

Affirmation

Simple form	V-ing form
I ought to chalk you ought to chalk she ought to chalk we ought to chalk you ought to chalk they ought to chalk	I ought to be chalking you ought to be chalking she ought to be chalking we ought to be chalking you ought to be chalking they ought to be chalking
Perfect	V-ing perfect
I ought to have chalked you ought to have chalked she ought to have chalked we ought to have chalked you ought to have chalked they ought to have chalked	I ought to have been chalking you ought to have been chalking she ought to have been chalking we ought to have been chalking you ought to have been chalking they ought to have been chalking

Negation

Simple form	V-ing form
I oughtn't to chalk you oughtn't to chalk she oughtn't to chalk we oughtn't to chalk you oughtn't to chalk they oughtn't to chalk	I oughtn't to be chalking you oughtn't to be chalking she oughtn't to be chalking we oughtn't to be chalking you oughtn't to be chalking they oughtn't to be chalking
Perfect	V-ing perfect
I oughtn't to have chalked you oughtn't to have chalked she oughtn't to have chalked we oughtn't to have chalked you oughtn't to have chalked they oughtn't to have chalked	I oughtn't to have been chalking you oughtn't to have been chalking she oughtn't to have been chalking we oughtn't to have been chalking you oughtn't to have been chalking they oughtn't to have been chalking

Interrogative form

Simple form	V-ing form
ought to I chalk? ought to you chalk? ought to she chalk? ought to we chalk? ought to you chalk? ought to they chalk?	ought to I be chalking? ought to you be chalking? ought to she be chalking? ought to we be chalking? ought to you be chalking? ought to they be chalking?
Perfect	V-ing perfect
ought to I have chalked? ought to you have chalked? ought to she have chalked? ought to we have chalked? ought to you have chalked? ought to they have chalked?	ought to I have been chalking? ought to you have been chalking? ought to she have been chalking? ought to we have been chalking? ought to you have been chalking? ought to they have been chalking?

Interro-negative form

Simple form	V-ing form
oughtn't I to chalk? oughtn't you to chalk? oughtn't she to chalk? oughtn't we to chalk? oughtn't you to chalk? oughtn't they to chalk?	oughtn't I to be chalking? oughtn't you to be chalking? oughtn't she to be chalking? oughtn't we to be chalking? oughtn't you to be chalking? oughtn't they to be chalking?
Perfect	V-ing perfect
oughtn't I to have chalked? oughtn't you to have chalked? oughtn't she to have chalked? oughtn't we to have chalked? oughtn't you to have chalked? oughtn't they to have chalked?	oughtn't I to have been chalking? oughtn't you to have been chalking? oughtn't she to have been chalking? oughtn't we to have been chalking? oughtn't you to have been chalking? oughtn't they to have been chalking?