must isomerise
Verbe régulier : isomerise - isomerised- isomerised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must isomerise
you must isomerise
he must isomerise
we must isomerise
you must isomerise
they must isomerise 	I must be isomerising
you must be isomerising
he must be isomerising
we must be isomerising
you must be isomerising
they must be isomerising	I must have isomerised
you must have isomerised
he must have isomerised
we must have isomerised
you must have isomerised
they must have isomerised	I must have been isomerising
you must have been isomerising
he must have been isomerising
we must have been isomerising
you must have been isomerising
they must have been isomerising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't isomerise
you mustn't isomerise
he mustn't isomerise
we mustn't isomerise
you mustn't isomerise
they mustn't isomerise 	I mustn't be isomerising
you mustn't be isomerising
he mustn't be isomerising
we mustn't be isomerising
you mustn't be isomerising
they mustn't be isomerising	I mustn't have isomerised
you mustn't have isomerised
he mustn't have isomerised
we mustn't have isomerised
you mustn't have isomerised
they mustn't have isomerised	I mustn't have been isomerising
you mustn't have been isomerising
he mustn't have been isomerising
we mustn't have been isomerising
you mustn't have been isomerising
they mustn't have been isomerising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I isomerise?
must you isomerise?
must he isomerise?
must we isomerise?
must you isomerise?
must they isomerise? 	must I be isomerising?
must you be isomerising?
must he be isomerising?
must we be isomerising?
must you be isomerising?
must they be isomerising? 	must I have isomerised?
must you have isomerised?
must he have isomerised?
must we have isomerised?
must you have isomerised?
must they have isomerised? 	must I have been isomerising?
must you have been isomerising?
must he have been isomerising?
must we have been isomerising?
must you have been isomerising?
must they have been isomerising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I isomerise?
mustn't you isomerise?
mustn't he isomerise?
mustn't we isomerise?
mustn't you isomerise?
mustn't they isomerise? 	mustn't I be isomerising?
mustn't you be isomerising?
mustn't he be isomerising?
mustn't we be isomerising?
mustn't you be isomerising?
mustn't they be isomerising? 	mustn't I have isomerised?
mustn't you have isomerised?
mustn't he have isomerised?
mustn't we have isomerised?
mustn't you have isomerised?
mustn't they have isomerised? 	mustn't I have been isomerising?
mustn't you have been isomerising?
mustn't he have been isomerising?
mustn't we have been isomerising?
mustn't you have been isomerising?
mustn't they have been isomerising?