English verb conjugation
OUGHT TO DOUBT

Regular verb: doubt - doubted - doubted

Affirmation

Simple form	V-ing form
I ought to doubt you ought to doubt she ought to doubt we ought to doubt you ought to doubt they ought to doubt	I ought to be doubting you ought to be doubting she ought to be doubting we ought to be doubting you ought to be doubting they ought to be doubting
Perfect	V-ing perfect
I ought to have doubted you ought to have doubted she ought to have doubted we ought to have doubted you ought to have doubted they ought to have doubted	I ought to have been doubting you ought to have been doubting she ought to have been doubting we ought to have been doubting you ought to have been doubting they ought to have been doubting

Negation

Simple form	V-ing form
I ought not to doubt you ought not to doubt she ought not to doubt we ought not to doubt you ought not to doubt they ought not to doubt	I ought not to doubting you ought not to doubting she ought not to doubting we ought not to doubting you ought not to doubting they ought not to doubting
Perfect	V-ing perfect
I ought not to have doubted you ought not to have doubted she ought not to have doubted we ought not to have doubted you ought not to have doubted they ought not to have doubted	I ought not to have been doubting you ought not to have been doubting she ought not to have been doubting we ought not to have been doubting you ought not to have been doubting they ought not to have been doubting

Interrogative form

Simple form	V-ing form
ought to I doubt? ought to you doubt? ought to she doubt? ought to we doubt? ought to you doubt? ought to they doubt?	ought to I be doubting? ought to you be doubting? ought to she be doubting? ought to we be doubting? ought to you be doubting? ought to they be doubting?
Perfect	V-ing perfect
ought to I have doubted? ought to you have doubted? ought to she have doubted? ought to we have doubted? ought to you have doubted? ought to they have doubted?	ought to I have been doubting? ought to you have been doubting? ought to she have been doubting? ought to we have been doubting? ought to you have been doubting? ought to they have been doubting?

Interro-negative form

Simple form	V-ing form
ought I not to doubt? ought you not to doubt? ought she not to doubt? ought we not to doubt? ought you not to doubt? ought they not to doubt?	ought I not to be doubting? ought you not to be doubting? ought she not to be doubting? ought we not to be doubting? ought you not to be doubting? ought they not to be doubting?
Perfect	V-ing perfect
ought I not to have doubted? ought you not to have doubted? ought she not to have doubted? ought we not to have doubted? ought you not to have doubted? ought they not to have doubted?	ought I not to have been doubting? ought you not to have been doubting? ought she not to have been doubting? ought we not to have been doubting? ought you not to have been doubting? ought they not to have been doubting?