male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation COULD LACK
Regular verb: lack - lacked - lacked
Affirmation
Simple form
I could lackyou could lack
she could lack
we could lack
you could lack
they could lack
V-ing form
I could be lackingyou could be lacking
she could be lacking
we could be lacking
you could be lacking
they could be lacking
Perfect
I could have lackedyou 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 lackingyou 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 lackyou 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 lackingyou 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 lackedyou 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 lackingyou 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?