must concertise
Verbe régulier : concertise - concertised- concertised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must concertise
you must concertise
he must concertise
we must concertise
you must concertise
they must concertise 	I must be concertising
you must be concertising
he must be concertising
we must be concertising
you must be concertising
they must be concertising	I must have concertised
you must have concertised
he must have concertised
we must have concertised
you must have concertised
they must have concertised	I must have been concertising
you must have been concertising
he must have been concertising
we must have been concertising
you must have been concertising
they must have been concertising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't concertise
you mustn't concertise
he mustn't concertise
we mustn't concertise
you mustn't concertise
they mustn't concertise 	I mustn't be concertising
you mustn't be concertising
he mustn't be concertising
we mustn't be concertising
you mustn't be concertising
they mustn't be concertising	I mustn't have concertised
you mustn't have concertised
he mustn't have concertised
we mustn't have concertised
you mustn't have concertised
they mustn't have concertised	I mustn't have been concertising
you mustn't have been concertising
he mustn't have been concertising
we mustn't have been concertising
you mustn't have been concertising
they mustn't have been concertising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I concertise?
must you concertise?
must he concertise?
must we concertise?
must you concertise?
must they concertise? 	must I be concertising?
must you be concertising?
must he be concertising?
must we be concertising?
must you be concertising?
must they be concertising? 	must I have concertised?
must you have concertised?
must he have concertised?
must we have concertised?
must you have concertised?
must they have concertised? 	must I have been concertising?
must you have been concertising?
must he have been concertising?
must we have been concertising?
must you have been concertising?
must they have been concertising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I concertise?
mustn't you concertise?
mustn't he concertise?
mustn't we concertise?
mustn't you concertise?
mustn't they concertise? 	mustn't I be concertising?
mustn't you be concertising?
mustn't he be concertising?
mustn't we be concertising?
mustn't you be concertising?
mustn't they be concertising? 	mustn't I have concertised?
mustn't you have concertised?
mustn't he have concertised?
mustn't we have concertised?
mustn't you have concertised?
mustn't they have concertised? 	mustn't I have been concertising?
mustn't you have been concertising?
mustn't he have been concertising?
mustn't we have been concertising?
mustn't you have been concertising?
mustn't they have been concertising?