I must befall you must befall she must befall we must befall you must befall they must befall
Forma com V-ing
I must be befalling you must be befalling she must be befalling we must be befalling you must be befalling they must be befalling
Perfeito
I must have befallen you must have befallen she must have befallen we must have befallen you must have befallen they must have befallen
Perfeito com V-ing
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
Negação
Forma simple
I mustn't befall you mustn't befall she mustn't befall we mustn't befall you mustn't befall they mustn't befall
Forma com V-ing
I mustn't be befalling you mustn't be befalling she mustn't be befalling we mustn't be befalling you mustn't be befalling they mustn't be befalling
Perfeito
I mustn't have befallen you mustn't have befallen she mustn't have befallen we mustn't have befallen you mustn't have befallen they mustn't have befallen
Perfeito com V-ing
I mustn't have been befalling you mustn't have been befalling she mustn't have been befalling we mustn't have been befalling you mustn't have been befalling they mustn't have been befalling
Forma interrogativa
Forma simple
must I befall? must you befall? must she befall? must we befall? must you befall? must they befall?
Forma com V-ing
must I be befalling? must you be befalling? must she be befalling? must we be befalling? must you be befalling? must they be befalling?
Perfeito
must I have befallen? must you have befallen? must she have befallen? must we have befallen? must you have befallen? must they have befallen?
Perfeito com V-ing
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?
Forma interro-Negação
Forma simple
mustn't I befall? mustn't you befall? mustn't she befall? mustn't we befall? mustn't you befall? mustn't they befall?
Forma com V-ing
mustn't I be befalling? mustn't you be befalling? mustn't she be befalling? mustn't we be befalling? mustn't you be befalling? mustn't they be befalling?
Perfeito
mustn't I have befallen? mustn't you have befallen? mustn't she have befallen? mustn't we have befallen? mustn't you have befallen? mustn't they have befallen?
Perfeito com V-ing
mustn't I have been befalling? mustn't you have been befalling? mustn't she have been befalling? mustn't we have been befalling? mustn't you have been befalling? mustn't they have been befalling?