female gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation CAN CONCERN
Regular verb: concern - concerned - concerned
Affirmation
Simple form
I can concernyou can concern
he can concern
we can concern
you can concern
they can concern
V-ing form
I can be concerningyou can be concerning
he can be concerning
we can be concerning
you can be concerning
they can be concerning
Perfect
I can have concernedyou can have concerned
he can have concerned
we can have concerned
you can have concerned
they can have concerned
V-ing perfect
I can have been concerningyou can have been concerning
he can have been concerning
we can have been concerning
you can have been concerning
they can have been concerning
Negation
Simple form
I can't concernyou can't concern
he can't concern
we can't concern
you can't concern
they can't concern
V-ing form
I can't be concerningyou can't be concerning
he can't be concerning
we can't be concerning
you can't be concerning
they can't be concerning
Perfect
I can't have concernedyou can't have concerned
he can't have concerned
we can't have concerned
you can't have concerned
they can't have concerned
V-ing perfect
I can't have been concerningyou can't have been concerning
he can't have been concerning
we can't have been concerning
you can't have been concerning
they can't have been concerning
Interrogative form
Simple form
can I concern?can you concern?
can he concern?
can we concern?
can you concern?
can they concern?
V-ing form
can I be concerning?can you be concerning?
can he be concerning?
can we be concerning?
can you be concerning?
can they be concerning?
Perfect
can I have concerned?can you have concerned?
can he have concerned?
can we have concerned?
can you have concerned?
can they have concerned?
V-ing perfect
can I have been concerning?can you have been concerning?
can he have been concerning?
can we have been concerning?
can you have been concerning?
can they have been concerning?
Interro-negative form
Simple form
can't I concern?can't you concern?
can't he concern?
can't we concern?
can't you concern?
can't they concern?
V-ing form
can't I be concerning?can't you be concerning?
can't he be concerning?
can't we be concerning?
can't you be concerning?
can't they be concerning?
Perfect
can't I have concerned?can't you have concerned?
can't he have concerned?
can't we have concerned?
can't you have concerned?
can't they have concerned?
V-ing perfect
can't I have been concerning?can't you have been concerning?
can't he have been concerning?
can't we have been concerning?
can't you have been concerning?
can't they have been concerning?