English verb conjugation CAN DOUBT

Regular verb: doubt - doubted - doubted

Affirmation

Simple form

I can doubt
you can doubt
he can doubt
we can doubt
you can doubt
they can doubt

V-ing form

I can be doubting
you can be doubting
he can be doubting
we can be doubting
you can be doubting
they can be doubting

Perfect

I can have doubted
you can have doubted
he can have doubted
we can have doubted
you can have doubted
they can have doubted

V-ing perfect

I can have been doubting
you can have been doubting
he can have been doubting
we can have been doubting
you can have been doubting
they can have been doubting

Negation

Simple form

I can't doubt
you can't doubt
he can't doubt
we can't doubt
you can't doubt
they can't doubt

V-ing form

I can't be doubting
you can't be doubting
he can't be doubting
we can't be doubting
you can't be doubting
they can't be doubting

Perfect

I can't have doubted
you can't have doubted
he can't have doubted
we can't have doubted
you can't have doubted
they can't have doubted

V-ing perfect

I can't have been doubting
you can't have been doubting
he can't have been doubting
we can't have been doubting
you can't have been doubting
they can't have been doubting

Interrogative form

Simple form

can I doubt?
can you doubt?
can he doubt?
can we doubt?
can you doubt?
can they doubt?

V-ing form

can I be doubting?
can you be doubting?
can he be doubting?
can we be doubting?
can you be doubting?
can they be doubting?

Perfect

can I have doubted?
can you have doubted?
can he have doubted?
can we have doubted?
can you have doubted?
can they have doubted?

V-ing perfect

can I have been doubting?
can you have been doubting?
can he have been doubting?
can we have been doubting?
can you have been doubting?
can they have been doubting?

Interro-negative form

Simple form

can't I doubt?
can't you doubt?
can't he doubt?
can't we doubt?
can't you doubt?
can't they doubt?

V-ing form

can't I be doubting?
can't you be doubting?
can't he be doubting?
can't we be doubting?
can't you be doubting?
can't they be doubting?

Perfect

can't I have doubted?
can't you have doubted?
can't he have doubted?
can't we have doubted?
can't you have doubted?
can't they have doubted?

V-ing perfect

can't I have been doubting?
can't you have been doubting?
can't he have been doubting?
can't we have been doubting?
can't you have been doubting?
can't they have been doubting?

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