English verb conjugation COULD CONCEAL

Regular verb: conceal - concealed - concealed

Affirmation

Simple form

I could conceal
you could conceal
he could conceal
we could conceal
you could conceal
they could conceal

V-ing form

I could be concealing
you could be concealing
he could be concealing
we could be concealing
you could be concealing
they could be concealing

Perfect

I could have concealed
you could have concealed
he 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
he could have been concealing
we could have been concealing
you could have been concealing
they could have been concealing

Negation

Simple form

I could not conceal
you could not conceal
he could not conceal
we could not conceal
you could not conceal
they could not conceal

V-ing form

I could not be concealing
you could not be concealing
he could not be concealing
we could not be concealing
you could not be concealing
they could not be concealing

Perfect

I could not have concealed
you could not have concealed
he could not have concealed
we could not have concealed
you could not have concealed
they could not have concealed

V-ing perfect

I could not have been concealing
you could not have been concealing
he could not have been concealing
we could not have been concealing
you could not have been concealing
they could not have been concealing

Interrogative form

Simple form

could I conceal?
could you conceal?
could he conceal?
could we conceal?
could you conceal?
could they conceal?

V-ing form

could I be concealing?
could you be concealing?
could he be concealing?
could we be concealing?
could you be concealing?
could they be concealing?

Perfect

could I have concealed?
could you have concealed?
could he 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 he have been concealing?
could we have been concealing?
could you have been concealing?
could they have been concealing?

Interro-negative form

Simple form

could I not conceal?
could you not conceal?
could he not conceal?
could we not conceal?
could you not conceal?
could they not conceal?

V-ing form

could I not be concealing?
could you not be concealing?
could he not be concealing?
could we not be concealing?
could you not be concealing?
could they not be concealing?

Perfect

could I not have concealed?
could you not have concealed?
could he not have concealed?
could we not have concealed?
could you not have concealed?
could they not have concealed?

V-ing perfect

could I not have been concealing?
could you not have been concealing?
could he not have been concealing?
could we not have been concealing?
could you not have been concealing?
could they not have been concealing?

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