could concertize
Verbe régulier : concertize - concertized- concertized

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could concertize
you could concertize
she could concertize
we could concertize
you could concertize
they could concertize 	I could be concertizing
you could be concertizing
she could be concertizing
we could be concertizing
you could be concertizing
they could be concertizing	I could have concertized
you could have concertized
she could have concertized
we could have concertized
you could have concertized
they could have concertized	I could have been concertizing
you could have been concertizing
she could have been concertizing
we could have been concertizing
you could have been concertizing
they could have been concertizing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't concertize
you couldn't concertize
she couldn't concertize
we couldn't concertize
you couldn't concertize
they couldn't concertize 	I couldn't be concertizing
you couldn't be concertizing
she couldn't be concertizing
we couldn't be concertizing
you couldn't be concertizing
they couldn't be concertizing	I couldn't have concertized
you couldn't have concertized
she couldn't have concertized
we couldn't have concertized
you couldn't have concertized
they couldn't have concertized	I couldn't have been concertizing
you couldn't have been concertizing
she couldn't have been concertizing
we couldn't have been concertizing
you couldn't have been concertizing
they couldn't have been concertizing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I concertize?
could you concertize?
could she concertize?
could we concertize?
could you concertize?
could they concertize? 	could I be concertizing?
could you be concertizing?
could she be concertizing?
could we be concertizing?
could you be concertizing?
could they be concertizing? 	could I have concertized?
could you have concertized?
could she have concertized?
could we have concertized?
could you have concertized?
could they have concertized? 	could I have been concertizing?
could you have been concertizing?
could she have been concertizing?
could we have been concertizing?
could you have been concertizing?
could they have been concertizing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I concertize?
couldn't you concertize?
couldn't she concertize?
couldn't we concertize?
couldn't you concertize?
couldn't they concertize? 	couldn't I be concertizing?
couldn't you be concertizing?
couldn't she be concertizing?
couldn't we be concertizing?
couldn't you be concertizing?
couldn't they be concertizing? 	couldn't I have concertized?
couldn't you have concertized?
couldn't she have concertized?
couldn't we have concertized?
couldn't you have concertized?
couldn't they have concertized? 	couldn't I have been concertizing?
couldn't you have been concertizing?
couldn't she have been concertizing?
couldn't we have been concertizing?
couldn't you have been concertizing?
couldn't they have been concertizing?