must befall
Verbe irrégulier : befall - befell- befallen
Traduction française : arriver à - arriver 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must befall
you must befall
she must befall
we must befall
you must befall
they must befall 	I must be befalling
you must be befalling
she must be befalling
we must be befalling
you must be befalling
they must be befalling	I must have befallen
you must have befallen
she must have befallen
we must have befallen
you must have befallen
they must have befallen	I must have been befalling
you must have been befalling
she must have been befalling
we must have been befalling
you must have been befalling
they must have been befalling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not befall
you must not befall
she must not befall
we must not befall
you must not befall
they must not befall 	I must not be befalling
you must not be befalling
she must not be befalling
we must not be befalling
you must not be befalling
they must not be befalling	I must not have befallen
you must not have befallen
she must not have befallen
we must not have befallen
you must not have befallen
they must not have befallen	I must not have been befalling
you must not have been befalling
she must not have been befalling
we must not have been befalling
you must not have been befalling
they must not have been befalling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I befall?
must you befall?
must she befall?
must we befall?
must you befall?
must they befall? 	must I be befalling?
must you be befalling?
must she be befalling?
must we be befalling?
must you be befalling?
must they be befalling? 	must I have befallen?
must you have befallen?
must she have befallen?
must we have befallen?
must you have befallen?
must they have befallen? 	must I have been befalling?
must you have been befalling?
must she have been befalling?
must we have been befalling?
must you have been befalling?
must they have been befalling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not befall?
must you not befall?
must she not befall?
must we not befall?
must you not befall?
must they not befall? 	must I not be befalling?
must you not be befalling?
must she not be befalling?
must we not be befalling?
must you not be befalling?
must they not be befalling? 	must I not have befallen?
must you not have befallen?
must she not have befallen?
must we not have befallen?
must you not have befallen?
must they not have befallen? 	must I not have been befalling?
must you not have been befalling?
must she not have been befalling?
must we not have been befalling?
must you not have been befalling?
must they not have been befalling?