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
he must diphthongise
we must diphthongise
you must diphthongise
they must diphthongise 	I must be diphthongising
you must be diphthongising
he must be diphthongising
we must be diphthongising
you must be diphthongising
they must be diphthongising	I must have diphthongised
you must have diphthongised
he 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
he 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 must not diphthongise
you must not diphthongise
he must not diphthongise
we must not diphthongise
you must not diphthongise
they must not diphthongise 	I must not be diphthongising
you must not be diphthongising
he must not be diphthongising
we must not be diphthongising
you must not be diphthongising
they must not be diphthongising	I must not have diphthongised
you must not have diphthongised
he must not have diphthongised
we must not have diphthongised
you must not have diphthongised
they must not have diphthongised	I must not have been diphthongising
you must not have been diphthongising
he must not have been diphthongising
we must not have been diphthongising
you must not have been diphthongising
they must not have been diphthongising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I diphthongise?
must you diphthongise?
must he diphthongise?
must we diphthongise?
must you diphthongise?
must they diphthongise? 	must I be diphthongising?
must you be diphthongising?
must he be diphthongising?
must we be diphthongising?
must you be diphthongising?
must they be diphthongising? 	must I have diphthongised?
must you have diphthongised?
must he 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 he 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 	
must I not diphthongise?
must you not diphthongise?
must he not diphthongise?
must we not diphthongise?
must you not diphthongise?
must they not diphthongise? 	must I not be diphthongising?
must you not be diphthongising?
must he not be diphthongising?
must we not be diphthongising?
must you not be diphthongising?
must they not be diphthongising? 	must I not have diphthongised?
must you not have diphthongised?
must he not have diphthongised?
must we not have diphthongised?
must you not have diphthongised?
must they not have diphthongised? 	must I not have been diphthongising?
must you not have been diphthongising?
must he not have been diphthongising?
must we not have been diphthongising?
must you not have been diphthongising?
must they not have been diphthongising?