English verb conjugation COULD LACK

Regular verb: lack - lacked - lacked

Affirmation

Simple form

I could lack
you could lack
she could lack
we could lack
you could lack
they could lack

V-ing form

I could be lacking
you could be lacking
she could be lacking
we could be lacking
you could be lacking
they could be lacking

Perfect

I could have lacked
you could have lacked
she could have lacked
we could have lacked
you could have lacked
they could have lacked

V-ing perfect

I could have been lacking
you could have been lacking
she could have been lacking
we could have been lacking
you could have been lacking
they could have been lacking

Negation

Simple form

I couldn't lack
you couldn't lack
she couldn't lack
we couldn't lack
you couldn't lack
they couldn't lack

V-ing form

I couldn't be lacking
you couldn't be lacking
she couldn't be lacking
we couldn't be lacking
you couldn't be lacking
they couldn't be lacking

Perfect

I couldn't have lacked
you couldn't have lacked
she couldn't have lacked
we couldn't have lacked
you couldn't have lacked
they couldn't have lacked

V-ing perfect

I couldn't have been lacking
you couldn't have been lacking
she couldn't have been lacking
we couldn't have been lacking
you couldn't have been lacking
they couldn't have been lacking

Interrogative form

Simple form

could I lack?
could you lack?
could she lack?
could we lack?
could you lack?
could they lack?

V-ing form

could I be lacking?
could you be lacking?
could she be lacking?
could we be lacking?
could you be lacking?
could they be lacking?

Perfect

could I have lacked?
could you have lacked?
could she have lacked?
could we have lacked?
could you have lacked?
could they have lacked?

V-ing perfect

could I have been lacking?
could you have been lacking?
could she have been lacking?
could we have been lacking?
could you have been lacking?
could they have been lacking?

Interro-negative form

Simple form

couldn't I lack?
couldn't you lack?
couldn't she lack?
couldn't we lack?
couldn't you lack?
couldn't they lack?

V-ing form

couldn't I be lacking?
couldn't you be lacking?
couldn't she be lacking?
couldn't we be lacking?
couldn't you be lacking?
couldn't they be lacking?

Perfect

couldn't I have lacked?
couldn't you have lacked?
couldn't she have lacked?
couldn't we have lacked?
couldn't you have lacked?
couldn't they have lacked?

V-ing perfect

couldn't I have been lacking?
couldn't you have been lacking?
couldn't she have been lacking?
couldn't we have been lacking?
couldn't you have been lacking?
couldn't they have been lacking?

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