must foam
Verbo regular: foam - foamed- foamed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must foam
you must foam
she must foam
we must foam
you must foam
they must foam 	I must be foaming
you must be foaming
she must be foaming
we must be foaming
you must be foaming
they must be foaming	I must have foamed
you must have foamed
she 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
she must have been foaming
we must have been foaming
you must have been foaming
they must have been foaming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not foam
you must not foam
she 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
she 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
she 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
she 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 con V-ing 	Perfecto 	Perfecto con V-ing 	
must I foam?
must you foam?
must she foam?
must we foam?
must you foam?
must they foam? 	must I be foaming?
must you be foaming?
must she be foaming?
must we be foaming?
must you be foaming?
must they be foaming? 	must I have foamed?
must you have foamed?
must she 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 she have been foaming?
must we have been foaming?
must you have been foaming?
must they have been foaming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not foam?
must you not foam?
must she 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 she 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 she 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 she not have been foaming?
must we not have been foaming?
must you not have been foaming?
must they not have been foaming?