English verb conjugation
CAN CONCERTIZE

Regular verb: concertize - concertized - concertized

Affirmation

Simple form	V-ing form
I can concertize you can concertize he can concertize we can concertize you can concertize they can concertize	I can be concertizing you can be concertizing he can be concertizing we can be concertizing you can be concertizing they can be concertizing
Perfect	V-ing perfect
I can have concertized you can have concertized he can have concertized we can have concertized you can have concertized they can have concertized	I can have been concertizing you can have been concertizing he can have been concertizing we can have been concertizing you can have been concertizing they can have been concertizing

Negation

Simple form	V-ing form
I can't concertize you can't concertize he can't concertize we can't concertize you can't concertize they can't concertize	I can't be concertizing you can't be concertizing he can't be concertizing we can't be concertizing you can't be concertizing they can't be concertizing
Perfect	V-ing perfect
I can't have concertized you can't have concertized he can't have concertized we can't have concertized you can't have concertized they can't have concertized	I can't have been concertizing you can't have been concertizing he can't have been concertizing we can't have been concertizing you can't have been concertizing they can't have been concertizing

Interrogative form

Simple form	V-ing form
can I concertize? can you concertize? can he concertize? can we concertize? can you concertize? can they concertize?	can I be concertizing? can you be concertizing? can he be concertizing? can we be concertizing? can you be concertizing? can they be concertizing?
Perfect	V-ing perfect
can I have concertized? can you have concertized? can he have concertized? can we have concertized? can you have concertized? can they have concertized?	can I have been concertizing? can you have been concertizing? can he have been concertizing? can we have been concertizing? can you have been concertizing? can they have been concertizing?

Interro-negative form

Simple form	V-ing form
can't I concertize? can't you concertize? can't he concertize? can't we concertize? can't you concertize? can't they concertize?	can't I be concertizing? can't you be concertizing? can't he be concertizing? can't we be concertizing? can't you be concertizing? can't they be concertizing?
Perfect	V-ing perfect
can't I have concertized? can't you have concertized? can't he have concertized? can't we have concertized? can't you have concertized? can't they have concertized?	can't I have been concertizing? can't you have been concertizing? can't he have been concertizing? can't we have been concertizing? can't you have been concertizing? can't they have been concertizing?