can diphthongise
Verbe régulier : diphthongise - diphthongised- diphthongised

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

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

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

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