must rosin
Verbe régulier : rosin - rosined- rosined
Traduction française : traiter à la colophane - enduire de colophane 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must rosin
you must rosin
he must rosin
we must rosin
you must rosin
they must rosin 	I must be rosining
you must be rosining
he must be rosining
we must be rosining
you must be rosining
they must be rosining	I must have rosined
you must have rosined
he must have rosined
we must have rosined
you must have rosined
they must have rosined	I must have been rosining
you must have been rosining
he must have been rosining
we must have been rosining
you must have been rosining
they must have been rosining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't rosin
you mustn't rosin
he mustn't rosin
we mustn't rosin
you mustn't rosin
they mustn't rosin 	I mustn't be rosining
you mustn't be rosining
he mustn't be rosining
we mustn't be rosining
you mustn't be rosining
they mustn't be rosining	I mustn't have rosined
you mustn't have rosined
he mustn't have rosined
we mustn't have rosined
you mustn't have rosined
they mustn't have rosined	I mustn't have been rosining
you mustn't have been rosining
he mustn't have been rosining
we mustn't have been rosining
you mustn't have been rosining
they mustn't have been rosining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I rosin?
must you rosin?
must he rosin?
must we rosin?
must you rosin?
must they rosin? 	must I be rosining?
must you be rosining?
must he be rosining?
must we be rosining?
must you be rosining?
must they be rosining? 	must I have rosined?
must you have rosined?
must he have rosined?
must we have rosined?
must you have rosined?
must they have rosined? 	must I have been rosining?
must you have been rosining?
must he have been rosining?
must we have been rosining?
must you have been rosining?
must they have been rosining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I rosin?
mustn't you rosin?
mustn't he rosin?
mustn't we rosin?
mustn't you rosin?
mustn't they rosin? 	mustn't I be rosining?
mustn't you be rosining?
mustn't he be rosining?
mustn't we be rosining?
mustn't you be rosining?
mustn't they be rosining? 	mustn't I have rosined?
mustn't you have rosined?
mustn't he have rosined?
mustn't we have rosined?
mustn't you have rosined?
mustn't they have rosined? 	mustn't I have been rosining?
mustn't you have been rosining?
mustn't he have been rosining?
mustn't we have been rosining?
mustn't you have been rosining?
mustn't they have been rosining?