must rival
Verbe régulier : rival - rivalled- rivalled
Traduction française : rivaliser avec - être en concurrence avec 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must rival
you must rival
he must rival
we must rival
you must rival
they must rival 	I must be rivalling
you must be rivalling
he must be rivalling
we must be rivalling
you must be rivalling
they must be rivalling	I must have rivalled
you must have rivalled
he must have rivalled
we must have rivalled
you must have rivalled
they must have rivalled	I must have been rivalling
you must have been rivalling
he must have been rivalling
we must have been rivalling
you must have been rivalling
they must have been rivalling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't rival
you mustn't rival
he mustn't rival
we mustn't rival
you mustn't rival
they mustn't rival 	I mustn't be rivalling
you mustn't be rivalling
he mustn't be rivalling
we mustn't be rivalling
you mustn't be rivalling
they mustn't be rivalling	I mustn't have rivalled
you mustn't have rivalled
he mustn't have rivalled
we mustn't have rivalled
you mustn't have rivalled
they mustn't have rivalled	I mustn't have been rivalling
you mustn't have been rivalling
he mustn't have been rivalling
we mustn't have been rivalling
you mustn't have been rivalling
they mustn't have been rivalling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I rival?
must you rival?
must he rival?
must we rival?
must you rival?
must they rival? 	must I be rivalling?
must you be rivalling?
must he be rivalling?
must we be rivalling?
must you be rivalling?
must they be rivalling? 	must I have rivalled?
must you have rivalled?
must he have rivalled?
must we have rivalled?
must you have rivalled?
must they have rivalled? 	must I have been rivalling?
must you have been rivalling?
must he have been rivalling?
must we have been rivalling?
must you have been rivalling?
must they have been rivalling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I rival?
mustn't you rival?
mustn't he rival?
mustn't we rival?
mustn't you rival?
mustn't they rival? 	mustn't I be rivalling?
mustn't you be rivalling?
mustn't he be rivalling?
mustn't we be rivalling?
mustn't you be rivalling?
mustn't they be rivalling? 	mustn't I have rivalled?
mustn't you have rivalled?
mustn't he have rivalled?
mustn't we have rivalled?
mustn't you have rivalled?
mustn't they have rivalled? 	mustn't I have been rivalling?
mustn't you have been rivalling?
mustn't he have been rivalling?
mustn't we have been rivalling?
mustn't you have been rivalling?
mustn't they have been rivalling?