English verb conjugation COULD MARK MARK

Regular verb: mark mark - mark marked - mark marked

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form

I could mark mark
you could mark mark
she could mark mark
we could mark mark
you could mark mark
they could mark mark

V-ing form

I could be mark marking
you could be mark marking
she could be mark marking
we could be mark marking
you could be mark marking
they could be mark marking

Perfect

I could have mark marked
you could have mark marked
she could have mark marked
we could have mark marked
you could have mark marked
they could have mark marked

V-ing perfect

I could have been mark marking
you could have been mark marking
she could have been mark marking
we could have been mark marking
you could have been mark marking
they could have been mark marking

Negation

Simple form

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

V-ing form

I couldn't be mark marking
you couldn't be mark marking
she couldn't be mark marking
we couldn't be mark marking
you couldn't be mark marking
they couldn't be mark marking

Perfect

I couldn't have mark marked
you couldn't have mark marked
she couldn't have mark marked
we couldn't have mark marked
you couldn't have mark marked
they couldn't have mark marked

V-ing perfect

I couldn't have been mark marking
you couldn't have been mark marking
she couldn't have been mark marking
we couldn't have been mark marking
you couldn't have been mark marking
they couldn't have been mark marking

Interrogative form

Simple form

could I mark mark?
could you mark mark?
could she mark mark?
could we mark mark?
could you mark mark?
could they mark mark?

V-ing form

could I be mark marking?
could you be mark marking?
could she be mark marking?
could we be mark marking?
could you be mark marking?
could they be mark marking?

Perfect

could I have mark marked?
could you have mark marked?
could she have mark marked?
could we have mark marked?
could you have mark marked?
could they have mark marked?

V-ing perfect

could I have been mark marking?
could you have been mark marking?
could she have been mark marking?
could we have been mark marking?
could you have been mark marking?
could they have been mark marking?

Interro-negative form

Simple form

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

V-ing form

couldn't I be mark marking?
couldn't you be mark marking?
couldn't she be mark marking?
couldn't we be mark marking?
couldn't you be mark marking?
couldn't they be mark marking?

Perfect

couldn't I have mark marked?
couldn't you have mark marked?
couldn't she have mark marked?
couldn't we have mark marked?
couldn't you have mark marked?
couldn't they have mark marked?

V-ing perfect

couldn't I have been mark marking?
couldn't you have been mark marking?
couldn't she have been mark marking?
couldn't we have been mark marking?
couldn't you have been mark marking?
couldn't they have been mark marking?

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