English verb conjugation CAN CHECK

Regular verb: check - checked - checked

Affirmation

Simple form

I can check
you can check
he can check
we can check
you can check
they can check

V-ing form

I can be checking
you can be checking
he can be checking
we can be checking
you can be checking
they can be checking

Perfect

I can have checked
you can have checked
he can have checked
we can have checked
you can have checked
they can have checked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

can I check?
can you check?
can he check?
can we check?
can you check?
can they check?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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