English verb conjugation
SHALL DOUBT

Regular verb: doubt - doubted - doubted

Affirmation

Simple form	V-ing form
I shall doubt you shall doubt he shall doubt we shall doubt you shall doubt they shall doubt	I shall be doubting you shall be doubting he shall be doubting we shall be doubting you shall be doubting they shall be doubting
Perfect	V-ing perfect
I shall have doubted you shall have doubted he shall have doubted we shall have doubted you shall have doubted they shall have doubted	I shall have been doubting you shall have been doubting he shall have been doubting we shall have been doubting you shall have been doubting they shall have been doubting

Negation

Simple form	V-ing form
I shall not doubt you shall not doubt he shall not doubt we shall not doubt you shall not doubt they shall not doubt	I shall not be doubting you shall not be doubting he shall not be doubting we shall not be doubting you shall not be doubting they shall not be doubting
Perfect	V-ing perfect
I shall not have doubted you shall not have doubted he shall not have doubted we shall not have doubted you shall not have doubted they shall not have doubted	I shall not have been doubting you shall not have been doubting he shall not have been doubting we shall not have been doubting you shall not have been doubting they shall not have been doubting

Interrogative form

Simple form	V-ing form
shall I doubt? shall you doubt? shall he doubt? shall we doubt? shall you doubt? shall they doubt?	shall I be doubting? shall you be doubting? shall he be doubting? shall we be doubting? shall you be doubting? shall they be doubting?
Perfect	V-ing perfect
shall I have doubted? shall you have doubted? shall he have doubted? shall we have doubted? shall you have doubted? shall they have doubted?	shall I have been doubting? shall you have been doubting? shall he have been doubting? shall we have been doubting? shall you have been doubting? shall they have been doubting?

Interro-negative form

Simple form	V-ing form
shall I not doubt? shall you not doubt? shall he not doubt? shall we not doubt? shall you not doubt? shall they not doubt?	shall I not be doubting? shall you not be doubting? shall he not be doubting? shall we not be doubting? shall you not be doubting? shall they not be doubting?
Perfect	V-ing perfect
shall I not have doubted? shall you not have doubted? shall he not have doubted? shall we not have doubted? shall you not have doubted? shall they not have doubted?	shall I not have been doubting? shall you not have been doubting? shall he not have been doubting? shall we not have been doubting? shall you not have been doubting? shall they not have been doubting?