must foam
Verbo regular: foam - foamed- foamed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must foam
you must foam
he must foam
we must foam
you must foam
they must foam 	I must be foaming
you must be foaming
he must be foaming
we must be foaming
you must be foaming
they must be foaming	I must have foamed
you must have foamed
he must have foamed
we must have foamed
you must have foamed
they must have foamed	I must have been foaming
you must have been foaming
he must have been foaming
we must have been foaming
you must have been foaming
they must have been foaming	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not foam
you must not foam
he must not foam
we must not foam
you must not foam
they must not foam 	I must not be foaming
you must not be foaming
he must not be foaming
we must not be foaming
you must not be foaming
they must not be foaming	I must not have foamed
you must not have foamed
he must not have foamed
we must not have foamed
you must not have foamed
they must not have foamed	I must not have been foaming
you must not have been foaming
he must not have been foaming
we must not have been foaming
you must not have been foaming
they must not have been foaming	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I foam?
must you foam?
must he foam?
must we foam?
must you foam?
must they foam? 	must I be foaming?
must you be foaming?
must he be foaming?
must we be foaming?
must you be foaming?
must they be foaming? 	must I have foamed?
must you have foamed?
must he have foamed?
must we have foamed?
must you have foamed?
must they have foamed? 	must I have been foaming?
must you have been foaming?
must he have been foaming?
must we have been foaming?
must you have been foaming?
must they have been foaming? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not foam?
must you not foam?
must he not foam?
must we not foam?
must you not foam?
must they not foam? 	must I not be foaming?
must you not be foaming?
must he not be foaming?
must we not be foaming?
must you not be foaming?
must they not be foaming? 	must I not have foamed?
must you not have foamed?
must he not have foamed?
must we not have foamed?
must you not have foamed?
must they not have foamed? 	must I not have been foaming?
must you not have been foaming?
must he not have been foaming?
must we not have been foaming?
must you not have been foaming?
must they not have been foaming?