English verb conjugation COULD CONCERTIZE

Regular verb: concertize - concertized - concertized

Affirmation

Simple form

I could concertize
you could concertize
he could concertize
we could concertize
you could concertize
they could concertize

V-ing form

I could be concertizing
you could be concertizing
he could be concertizing
we could be concertizing
you could be concertizing
they could be concertizing

Perfect

I could have concertized
you could have concertized
he could have concertized
we could have concertized
you could have concertized
they could have concertized

V-ing perfect

I could have been concertizing
you could have been concertizing
he could have been concertizing
we could have been concertizing
you could have been concertizing
they could have been concertizing

Negation

Simple form

I couldn't concertize
you couldn't concertize
he couldn't concertize
we couldn't concertize
you couldn't concertize
they couldn't concertize

V-ing form

I couldn't be concertizing
you couldn't be concertizing
he couldn't be concertizing
we couldn't be concertizing
you couldn't be concertizing
they couldn't be concertizing

Perfect

I couldn't have concertized
you couldn't have concertized
he couldn't have concertized
we couldn't have concertized
you couldn't have concertized
they couldn't have concertized

V-ing perfect

I couldn't have been concertizing
you couldn't have been concertizing
he couldn't have been concertizing
we couldn't have been concertizing
you couldn't have been concertizing
they couldn't have been concertizing

Interrogative form

Simple form

could I concertize?
could you concertize?
could he concertize?
could we concertize?
could you concertize?
could they concertize?

V-ing form

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

Perfect

could I have concertized?
could you have concertized?
could he have concertized?
could we have concertized?
could you have concertized?
could they have concertized?

V-ing perfect

could I have been concertizing?
could you have been concertizing?
could he have been concertizing?
could we have been concertizing?
could you have been concertizing?
could they have been concertizing?

Interro-negative form

Simple form

couldn't I concertize?
couldn't you concertize?
couldn't he concertize?
couldn't we concertize?
couldn't you concertize?
couldn't they concertize?

V-ing form

couldn't I be concertizing?
couldn't you be concertizing?
couldn't he be concertizing?
couldn't we be concertizing?
couldn't you be concertizing?
couldn't they be concertizing?

Perfect

couldn't I have concertized?
couldn't you have concertized?
couldn't he have concertized?
couldn't we have concertized?
couldn't you have concertized?
couldn't they have concertized?

V-ing perfect

couldn't I have been concertizing?
couldn't you have been concertizing?
couldn't he have been concertizing?
couldn't we have been concertizing?
couldn't you have been concertizing?
couldn't they have been concertizing?

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