English verb conjugation CAN LACK

Regular verb: lack - lacked - lacked

Affirmation

Simple form

I can lack
you can lack
he can lack
we can lack
you can lack
they can lack

V-ing form

I can be lacking
you can be lacking
he can be lacking
we can be lacking
you can be lacking
they can be lacking

Perfect

I can have lacked
you can have lacked
he can have lacked
we can have lacked
you can have lacked
they can have lacked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

can I lack?
can you lack?
can he lack?
can we lack?
can you lack?
can they lack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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