English verb conjugation COULD DEMARK

Regular verb: demark - demarked - demarked

Affirmation

Simple form

I could demark
you could demark
she could demark
we could demark
you could demark
they could demark

V-ing form

I could be demarking
you could be demarking
she could be demarking
we could be demarking
you could be demarking
they could be demarking

Perfect

I could have demarked
you could have demarked
she could have demarked
we could have demarked
you could have demarked
they could have demarked

V-ing perfect

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

Negation

Simple form

I could not demark
you could not demark
she could not demark
we could not demark
you could not demark
they could not demark

V-ing form

I could not be demarking
you could not be demarking
she could not be demarking
we could not be demarking
you could not be demarking
they could not be demarking

Perfect

I could not have demarked
you could not have demarked
she could not have demarked
we could not have demarked
you could not have demarked
they could not have demarked

V-ing perfect

I could not have been demarking
you could not have been demarking
she could not have been demarking
we could not have been demarking
you could not have been demarking
they could not have been demarking

Interrogative form

Simple form

could I demark?
could you demark?
could she demark?
could we demark?
could you demark?
could they demark?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not demark?
could you not demark?
could she not demark?
could we not demark?
could you not demark?
could they not demark?

V-ing form

could I not be demarking?
could you not be demarking?
could she not be demarking?
could we not be demarking?
could you not be demarking?
could they not be demarking?

Perfect

could I not have demarked?
could you not have demarked?
could she not have demarked?
could we not have demarked?
could you not have demarked?
could they not have demarked?

V-ing perfect

could I not have been demarking?
could you not have been demarking?
could she not have been demarking?
could we not have been demarking?
could you not have been demarking?
could they not have been demarking?

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