must robe
Verbo regular: robe - robed- robed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must robe
you must robe
he must robe
we must robe
you must robe
they must robe 	I must be robing
you must be robing
he must be robing
we must be robing
you must be robing
they must be robing	I must have robed
you must have robed
he must have robed
we must have robed
you must have robed
they must have robed	I must have been robing
you must have been robing
he must have been robing
we must have been robing
you must have been robing
they must have been robing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't robe
you mustn't robe
he mustn't robe
we mustn't robe
you mustn't robe
they mustn't robe 	I mustn't be robing
you mustn't be robing
he mustn't be robing
we mustn't be robing
you mustn't be robing
they mustn't be robing	I mustn't have robed
you mustn't have robed
he mustn't have robed
we mustn't have robed
you mustn't have robed
they mustn't have robed	I mustn't have been robing
you mustn't have been robing
he mustn't have been robing
we mustn't have been robing
you mustn't have been robing
they mustn't have been robing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I robe?
must you robe?
must he robe?
must we robe?
must you robe?
must they robe? 	must I be robing?
must you be robing?
must he be robing?
must we be robing?
must you be robing?
must they be robing? 	must I have robed?
must you have robed?
must he have robed?
must we have robed?
must you have robed?
must they have robed? 	must I have been robing?
must you have been robing?
must he have been robing?
must we have been robing?
must you have been robing?
must they have been robing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I robe?
mustn't you robe?
mustn't he robe?
mustn't we robe?
mustn't you robe?
mustn't they robe? 	mustn't I be robing?
mustn't you be robing?
mustn't he be robing?
mustn't we be robing?
mustn't you be robing?
mustn't they be robing? 	mustn't I have robed?
mustn't you have robed?
mustn't he have robed?
mustn't we have robed?
mustn't you have robed?
mustn't they have robed? 	mustn't I have been robing?
mustn't you have been robing?
mustn't he have been robing?
mustn't we have been robing?
mustn't you have been robing?
mustn't they have been robing?