must diphthongise
Verbe régulier : diphthongise - diphthongised- diphthongised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must diphthongise
you must diphthongise
she must diphthongise
we must diphthongise
you must diphthongise
they must diphthongise 	I must be diphthongising
you must be diphthongising
she must be diphthongising
we must be diphthongising
you must be diphthongising
they must be diphthongising	I must have diphthongised
you must have diphthongised
she must have diphthongised
we must have diphthongised
you must have diphthongised
they must have diphthongised	I must have been diphthongising
you must have been diphthongising
she must have been diphthongising
we must have been diphthongising
you must have been diphthongising
they must have been diphthongising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't diphthongise
you mustn't diphthongise
she mustn't diphthongise
we mustn't diphthongise
you mustn't diphthongise
they mustn't diphthongise 	I mustn't be diphthongising
you mustn't be diphthongising
she mustn't be diphthongising
we mustn't be diphthongising
you mustn't be diphthongising
they mustn't be diphthongising	I mustn't have diphthongised
you mustn't have diphthongised
she mustn't have diphthongised
we mustn't have diphthongised
you mustn't have diphthongised
they mustn't have diphthongised	I mustn't have been diphthongising
you mustn't have been diphthongising
she mustn't have been diphthongising
we mustn't have been diphthongising
you mustn't have been diphthongising
they mustn't have been diphthongising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I diphthongise?
must you diphthongise?
must she diphthongise?
must we diphthongise?
must you diphthongise?
must they diphthongise? 	must I be diphthongising?
must you be diphthongising?
must she be diphthongising?
must we be diphthongising?
must you be diphthongising?
must they be diphthongising? 	must I have diphthongised?
must you have diphthongised?
must she have diphthongised?
must we have diphthongised?
must you have diphthongised?
must they have diphthongised? 	must I have been diphthongising?
must you have been diphthongising?
must she have been diphthongising?
must we have been diphthongising?
must you have been diphthongising?
must they have been diphthongising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I diphthongise?
mustn't you diphthongise?
mustn't she diphthongise?
mustn't we diphthongise?
mustn't you diphthongise?
mustn't they diphthongise? 	mustn't I be diphthongising?
mustn't you be diphthongising?
mustn't she be diphthongising?
mustn't we be diphthongising?
mustn't you be diphthongising?
mustn't they be diphthongising? 	mustn't I have diphthongised?
mustn't you have diphthongised?
mustn't she have diphthongised?
mustn't we have diphthongised?
mustn't you have diphthongised?
mustn't they have diphthongised? 	mustn't I have been diphthongising?
mustn't you have been diphthongising?
mustn't she have been diphthongising?
mustn't we have been diphthongising?
mustn't you have been diphthongising?
mustn't they have been diphthongising?