can concertize
Regular verb: concertize - concertized- concertized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?