must fob
Verbo regular: fob - fobbed- fobbed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must fob
you must fob
he must fob
we must fob
you must fob
they must fob 	I must be fobbing
you must be fobbing
he must be fobbing
we must be fobbing
you must be fobbing
they must be fobbing	I must have fobbed
you must have fobbed
he must have fobbed
we must have fobbed
you must have fobbed
they must have fobbed	I must have been fobbing
you must have been fobbing
he must have been fobbing
we must have been fobbing
you must have been fobbing
they must have been fobbing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't fob
you mustn't fob
he mustn't fob
we mustn't fob
you mustn't fob
they mustn't fob 	I mustn't be fobbing
you mustn't be fobbing
he mustn't be fobbing
we mustn't be fobbing
you mustn't be fobbing
they mustn't be fobbing	I mustn't have fobbed
you mustn't have fobbed
he mustn't have fobbed
we mustn't have fobbed
you mustn't have fobbed
they mustn't have fobbed	I mustn't have been fobbing
you mustn't have been fobbing
he mustn't have been fobbing
we mustn't have been fobbing
you mustn't have been fobbing
they mustn't have been fobbing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I fob?
must you fob?
must he fob?
must we fob?
must you fob?
must they fob? 	must I be fobbing?
must you be fobbing?
must he be fobbing?
must we be fobbing?
must you be fobbing?
must they be fobbing? 	must I have fobbed?
must you have fobbed?
must he have fobbed?
must we have fobbed?
must you have fobbed?
must they have fobbed? 	must I have been fobbing?
must you have been fobbing?
must he have been fobbing?
must we have been fobbing?
must you have been fobbing?
must they have been fobbing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I fob?
mustn't you fob?
mustn't he fob?
mustn't we fob?
mustn't you fob?
mustn't they fob? 	mustn't I be fobbing?
mustn't you be fobbing?
mustn't he be fobbing?
mustn't we be fobbing?
mustn't you be fobbing?
mustn't they be fobbing? 	mustn't I have fobbed?
mustn't you have fobbed?
mustn't he have fobbed?
mustn't we have fobbed?
mustn't you have fobbed?
mustn't they have fobbed? 	mustn't I have been fobbing?
mustn't you have been fobbing?
mustn't he have been fobbing?
mustn't we have been fobbing?
mustn't you have been fobbing?
mustn't they have been fobbing?