must crossruff
Verbe régulier : crossruff - crossruffed- crossruffed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must crossruff
you must crossruff
she must crossruff
we must crossruff
you must crossruff
they must crossruff 	I must be crossruffing
you must be crossruffing
she must be crossruffing
we must be crossruffing
you must be crossruffing
they must be crossruffing	I must have crossruffed
you must have crossruffed
she must have crossruffed
we must have crossruffed
you must have crossruffed
they must have crossruffed	I must have been crossruffing
you must have been crossruffing
she must have been crossruffing
we must have been crossruffing
you must have been crossruffing
they must have been crossruffing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't crossruff
you mustn't crossruff
she mustn't crossruff
we mustn't crossruff
you mustn't crossruff
they mustn't crossruff 	I mustn't be crossruffing
you mustn't be crossruffing
she mustn't be crossruffing
we mustn't be crossruffing
you mustn't be crossruffing
they mustn't be crossruffing	I mustn't have crossruffed
you mustn't have crossruffed
she mustn't have crossruffed
we mustn't have crossruffed
you mustn't have crossruffed
they mustn't have crossruffed	I mustn't have been crossruffing
you mustn't have been crossruffing
she mustn't have been crossruffing
we mustn't have been crossruffing
you mustn't have been crossruffing
they mustn't have been crossruffing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I crossruff?
must you crossruff?
must she crossruff?
must we crossruff?
must you crossruff?
must they crossruff? 	must I be crossruffing?
must you be crossruffing?
must she be crossruffing?
must we be crossruffing?
must you be crossruffing?
must they be crossruffing? 	must I have crossruffed?
must you have crossruffed?
must she have crossruffed?
must we have crossruffed?
must you have crossruffed?
must they have crossruffed? 	must I have been crossruffing?
must you have been crossruffing?
must she have been crossruffing?
must we have been crossruffing?
must you have been crossruffing?
must they have been crossruffing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I crossruff?
mustn't you crossruff?
mustn't she crossruff?
mustn't we crossruff?
mustn't you crossruff?
mustn't they crossruff? 	mustn't I be crossruffing?
mustn't you be crossruffing?
mustn't she be crossruffing?
mustn't we be crossruffing?
mustn't you be crossruffing?
mustn't they be crossruffing? 	mustn't I have crossruffed?
mustn't you have crossruffed?
mustn't she have crossruffed?
mustn't we have crossruffed?
mustn't you have crossruffed?
mustn't they have crossruffed? 	mustn't I have been crossruffing?
mustn't you have been crossruffing?
mustn't she have been crossruffing?
mustn't we have been crossruffing?
mustn't you have been crossruffing?
mustn't they have been crossruffing?