must ump
Verbo regular: ump - umped- umped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must ump
you must ump
he must ump
we must ump
you must ump
they must ump 	I must be umping
you must be umping
he must be umping
we must be umping
you must be umping
they must be umping	I must have umped
you must have umped
he must have umped
we must have umped
you must have umped
they must have umped	I must have been umping
you must have been umping
he must have been umping
we must have been umping
you must have been umping
they must have been umping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't ump
you mustn't ump
he mustn't ump
we mustn't ump
you mustn't ump
they mustn't ump 	I mustn't be umping
you mustn't be umping
he mustn't be umping
we mustn't be umping
you mustn't be umping
they mustn't be umping	I mustn't have umped
you mustn't have umped
he mustn't have umped
we mustn't have umped
you mustn't have umped
they mustn't have umped	I mustn't have been umping
you mustn't have been umping
he mustn't have been umping
we mustn't have been umping
you mustn't have been umping
they mustn't have been umping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I ump?
must you ump?
must he ump?
must we ump?
must you ump?
must they ump? 	must I be umping?
must you be umping?
must he be umping?
must we be umping?
must you be umping?
must they be umping? 	must I have umped?
must you have umped?
must he have umped?
must we have umped?
must you have umped?
must they have umped? 	must I have been umping?
must you have been umping?
must he have been umping?
must we have been umping?
must you have been umping?
must they have been umping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I ump?
mustn't you ump?
mustn't he ump?
mustn't we ump?
mustn't you ump?
mustn't they ump? 	mustn't I be umping?
mustn't you be umping?
mustn't he be umping?
mustn't we be umping?
mustn't you be umping?
mustn't they be umping? 	mustn't I have umped?
mustn't you have umped?
mustn't he have umped?
mustn't we have umped?
mustn't you have umped?
mustn't they have umped? 	mustn't I have been umping?
mustn't you have been umping?
mustn't he have been umping?
mustn't we have been umping?
mustn't you have been umping?
mustn't they have been umping?