English verb conjugation
OUGHT TO THUD

Regular verb: thud - thudded - thudded

Affirmation

Simple form	V-ing form
I ought to thud you ought to thud she ought to thud we ought to thud you ought to thud they ought to thud	I ought to be thudding you ought to be thudding she ought to be thudding we ought to be thudding you ought to be thudding they ought to be thudding
Perfect	V-ing perfect
I ought to have thudded you ought to have thudded she ought to have thudded we ought to have thudded you ought to have thudded they ought to have thudded	I ought to have been thudding you ought to have been thudding she ought to have been thudding we ought to have been thudding you ought to have been thudding they ought to have been thudding

Negation

Simple form	V-ing form
I oughtn't to thud you oughtn't to thud she oughtn't to thud we oughtn't to thud you oughtn't to thud they oughtn't to thud	I oughtn't to be thudding you oughtn't to be thudding she oughtn't to be thudding we oughtn't to be thudding you oughtn't to be thudding they oughtn't to be thudding
Perfect	V-ing perfect
I oughtn't to have thudded you oughtn't to have thudded she oughtn't to have thudded we oughtn't to have thudded you oughtn't to have thudded they oughtn't to have thudded	I oughtn't to have been thudding you oughtn't to have been thudding she oughtn't to have been thudding we oughtn't to have been thudding you oughtn't to have been thudding they oughtn't to have been thudding

Interrogative form

Simple form	V-ing form
ought to I thud? ought to you thud? ought to she thud? ought to we thud? ought to you thud? ought to they thud?	ought to I be thudding? ought to you be thudding? ought to she be thudding? ought to we be thudding? ought to you be thudding? ought to they be thudding?
Perfect	V-ing perfect
ought to I have thudded? ought to you have thudded? ought to she have thudded? ought to we have thudded? ought to you have thudded? ought to they have thudded?	ought to I have been thudding? ought to you have been thudding? ought to she have been thudding? ought to we have been thudding? ought to you have been thudding? ought to they have been thudding?

Interro-negative form

Simple form	V-ing form
oughtn't I to thud? oughtn't you to thud? oughtn't she to thud? oughtn't we to thud? oughtn't you to thud? oughtn't they to thud?	oughtn't I to be thudding? oughtn't you to be thudding? oughtn't she to be thudding? oughtn't we to be thudding? oughtn't you to be thudding? oughtn't they to be thudding?
Perfect	V-ing perfect
oughtn't I to have thudded? oughtn't you to have thudded? oughtn't she to have thudded? oughtn't we to have thudded? oughtn't you to have thudded? oughtn't they to have thudded?	oughtn't I to have been thudding? oughtn't you to have been thudding? oughtn't she to have been thudding? oughtn't we to have been thudding? oughtn't you to have been thudding? oughtn't they to have been thudding?