English verb conjugation
MAY DOUBT

Regular verb: doubt - doubted - doubted

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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