English verb conjugation
CAN DOUBT DOUBT DOUBT DOUBT

Regular verb: doubt doubt doubt doubt - doubt doubt doubt doubted - doubt doubt doubt doubted

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

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

Negation

Simple form	V-ing form
I can't doubt doubt doubt doubt you can't doubt doubt doubt doubt she can't doubt doubt doubt doubt we can't doubt doubt doubt doubt you can't doubt doubt doubt doubt they can't doubt doubt doubt doubt	I can't be doubt doubt doubt doubting you can't be doubt doubt doubt doubting she can't be doubt doubt doubt doubting we can't be doubt doubt doubt doubting you can't be doubt doubt doubt doubting they can't be doubt doubt doubt doubting
Perfect	V-ing perfect
I can't have doubt doubt doubt doubted you can't have doubt doubt doubt doubted she can't have doubt doubt doubt doubted we can't have doubt doubt doubt doubted you can't have doubt doubt doubt doubted they can't have doubt doubt doubt doubted	I can't have been doubt doubt doubt doubting you can't have been doubt doubt doubt doubting she can't have been doubt doubt doubt doubting we can't have been doubt doubt doubt doubting you can't have been doubt doubt doubt doubting they can't have been doubt doubt doubt doubting

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I doubt doubt doubt doubt? can't you doubt doubt doubt doubt? can't she doubt doubt doubt doubt? can't we doubt doubt doubt doubt? can't you doubt doubt doubt doubt? can't they doubt doubt doubt doubt?	can't I be doubt doubt doubt doubting? can't you be doubt doubt doubt doubting? can't she be doubt doubt doubt doubting? can't we be doubt doubt doubt doubting? can't you be doubt doubt doubt doubting? can't they be doubt doubt doubt doubting?
Perfect	V-ing perfect
can't I have doubt doubt doubt doubted? can't you have doubt doubt doubt doubted? can't she have doubt doubt doubt doubted? can't we have doubt doubt doubt doubted? can't you have doubt doubt doubt doubted? can't they have doubt doubt doubt doubted?	can't I have been doubt doubt doubt doubting? can't you have been doubt doubt doubt doubting? can't she have been doubt doubt doubt doubting? can't we have been doubt doubt doubt doubting? can't you have been doubt doubt doubt doubting? can't they have been doubt doubt doubt doubting?