must tree
Verbe régulier : tree - treed- treed
Traduction française : forcer ou obliger à se réfugier dans un arbre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must tree
you must tree
she must tree
we must tree
you must tree
they must tree 	I must be treeing
you must be treeing
she must be treeing
we must be treeing
you must be treeing
they must be treeing	I must have treed
you must have treed
she must have treed
we must have treed
you must have treed
they must have treed	I must have been treeing
you must have been treeing
she must have been treeing
we must have been treeing
you must have been treeing
they must have been treeing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't tree
you mustn't tree
she mustn't tree
we mustn't tree
you mustn't tree
they mustn't tree 	I mustn't be treeing
you mustn't be treeing
she mustn't be treeing
we mustn't be treeing
you mustn't be treeing
they mustn't be treeing	I mustn't have treed
you mustn't have treed
she mustn't have treed
we mustn't have treed
you mustn't have treed
they mustn't have treed	I mustn't have been treeing
you mustn't have been treeing
she mustn't have been treeing
we mustn't have been treeing
you mustn't have been treeing
they mustn't have been treeing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I tree?
must you tree?
must she tree?
must we tree?
must you tree?
must they tree? 	must I be treeing?
must you be treeing?
must she be treeing?
must we be treeing?
must you be treeing?
must they be treeing? 	must I have treed?
must you have treed?
must she have treed?
must we have treed?
must you have treed?
must they have treed? 	must I have been treeing?
must you have been treeing?
must she have been treeing?
must we have been treeing?
must you have been treeing?
must they have been treeing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I tree?
mustn't you tree?
mustn't she tree?
mustn't we tree?
mustn't you tree?
mustn't they tree? 	mustn't I be treeing?
mustn't you be treeing?
mustn't she be treeing?
mustn't we be treeing?
mustn't you be treeing?
mustn't they be treeing? 	mustn't I have treed?
mustn't you have treed?
mustn't she have treed?
mustn't we have treed?
mustn't you have treed?
mustn't they have treed? 	mustn't I have been treeing?
mustn't you have been treeing?
mustn't she have been treeing?
mustn't we have been treeing?
mustn't you have been treeing?
mustn't they have been treeing?