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male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to

English verb conjugation COULD CONCEAL

Regular verb: conceal - concealed - concealed


Affirmation

Simple form
I could conceal
you could conceal
she could conceal
we could conceal
you could conceal
they could conceal
V-ing form
I could be concealing
you could be concealing
she could be concealing
we could be concealing
you could be concealing
they could be concealing
Perfect
I could have concealed
you could have concealed
she could have concealed
we could have concealed
you could have concealed
they could have concealed
V-ing perfect
I could have been concealing
you could have been concealing
she could have been concealing
we could have been concealing
you could have been concealing
they could have been concealing

Negation

Simple form
I couldn't conceal
you couldn't conceal
she couldn't conceal
we couldn't conceal
you couldn't conceal
they couldn't conceal
V-ing form
I couldn't be concealing
you couldn't be concealing
she couldn't be concealing
we couldn't be concealing
you couldn't be concealing
they couldn't be concealing
Perfect
I couldn't have concealed
you couldn't have concealed
she couldn't have concealed
we couldn't have concealed
you couldn't have concealed
they couldn't have concealed
V-ing perfect
I couldn't have been concealing
you couldn't have been concealing
she couldn't have been concealing
we couldn't have been concealing
you couldn't have been concealing
they couldn't have been concealing

Interrogative form

Simple form
could I conceal?
could you conceal?
could she conceal?
could we conceal?
could you conceal?
could they conceal?
V-ing form
could I be concealing?
could you be concealing?
could she be concealing?
could we be concealing?
could you be concealing?
could they be concealing?
Perfect
could I have concealed?
could you have concealed?
could she have concealed?
could we have concealed?
could you have concealed?
could they have concealed?
V-ing perfect
could I have been concealing?
could you have been concealing?
could she have been concealing?
could we have been concealing?
could you have been concealing?
could they have been concealing?

Interro-negative form

Simple form
couldn't I conceal?
couldn't you conceal?
couldn't she conceal?
couldn't we conceal?
couldn't you conceal?
couldn't they conceal?
V-ing form
couldn't I be concealing?
couldn't you be concealing?
couldn't she be concealing?
couldn't we be concealing?
couldn't you be concealing?
couldn't they be concealing?
Perfect
couldn't I have concealed?
couldn't you have concealed?
couldn't she have concealed?
couldn't we have concealed?
couldn't you have concealed?
couldn't they have concealed?
V-ing perfect
couldn't I have been concealing?
couldn't you have been concealing?
couldn't she have been concealing?
couldn't we have been concealing?
couldn't you have been concealing?
couldn't they have been concealing?