must ascend
Verbo regular: ascend - ascended- ascended

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must ascend
you must ascend
he must ascend
we must ascend
you must ascend
they must ascend 	I must be ascending
you must be ascending
he must be ascending
we must be ascending
you must be ascending
they must be ascending	I must have ascended
you must have ascended
he must have ascended
we must have ascended
you must have ascended
they must have ascended	I must have been ascending
you must have been ascending
he must have been ascending
we must have been ascending
you must have been ascending
they must have been ascending	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't ascend
you mustn't ascend
he mustn't ascend
we mustn't ascend
you mustn't ascend
they mustn't ascend 	I mustn't be ascending
you mustn't be ascending
he mustn't be ascending
we mustn't be ascending
you mustn't be ascending
they mustn't be ascending	I mustn't have ascended
you mustn't have ascended
he mustn't have ascended
we mustn't have ascended
you mustn't have ascended
they mustn't have ascended	I mustn't have been ascending
you mustn't have been ascending
he mustn't have been ascending
we mustn't have been ascending
you mustn't have been ascending
they mustn't have been ascending	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I ascend?
must you ascend?
must he ascend?
must we ascend?
must you ascend?
must they ascend? 	must I be ascending?
must you be ascending?
must he be ascending?
must we be ascending?
must you be ascending?
must they be ascending? 	must I have ascended?
must you have ascended?
must he have ascended?
must we have ascended?
must you have ascended?
must they have ascended? 	must I have been ascending?
must you have been ascending?
must he have been ascending?
must we have been ascending?
must you have been ascending?
must they have been ascending? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I ascend?
mustn't you ascend?
mustn't he ascend?
mustn't we ascend?
mustn't you ascend?
mustn't they ascend? 	mustn't I be ascending?
mustn't you be ascending?
mustn't he be ascending?
mustn't we be ascending?
mustn't you be ascending?
mustn't they be ascending? 	mustn't I have ascended?
mustn't you have ascended?
mustn't he have ascended?
mustn't we have ascended?
mustn't you have ascended?
mustn't they have ascended? 	mustn't I have been ascending?
mustn't you have been ascending?
mustn't he have been ascending?
mustn't we have been ascending?
mustn't you have been ascending?
mustn't they have been ascending?