must yield
Verbo regular: yield - yielded- yielded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must yield
you must yield
he must yield
we must yield
you must yield
they must yield 	I must be yielding
you must be yielding
he must be yielding
we must be yielding
you must be yielding
they must be yielding	I must have yielded
you must have yielded
he must have yielded
we must have yielded
you must have yielded
they must have yielded	I must have been yielding
you must have been yielding
he must have been yielding
we must have been yielding
you must have been yielding
they must have been yielding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't yield
you mustn't yield
he mustn't yield
we mustn't yield
you mustn't yield
they mustn't yield 	I mustn't be yielding
you mustn't be yielding
he mustn't be yielding
we mustn't be yielding
you mustn't be yielding
they mustn't be yielding	I mustn't have yielded
you mustn't have yielded
he mustn't have yielded
we mustn't have yielded
you mustn't have yielded
they mustn't have yielded	I mustn't have been yielding
you mustn't have been yielding
he mustn't have been yielding
we mustn't have been yielding
you mustn't have been yielding
they mustn't have been yielding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I yield?
must you yield?
must he yield?
must we yield?
must you yield?
must they yield? 	must I be yielding?
must you be yielding?
must he be yielding?
must we be yielding?
must you be yielding?
must they be yielding? 	must I have yielded?
must you have yielded?
must he have yielded?
must we have yielded?
must you have yielded?
must they have yielded? 	must I have been yielding?
must you have been yielding?
must he have been yielding?
must we have been yielding?
must you have been yielding?
must they have been yielding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I yield?
mustn't you yield?
mustn't he yield?
mustn't we yield?
mustn't you yield?
mustn't they yield? 	mustn't I be yielding?
mustn't you be yielding?
mustn't he be yielding?
mustn't we be yielding?
mustn't you be yielding?
mustn't they be yielding? 	mustn't I have yielded?
mustn't you have yielded?
mustn't he have yielded?
mustn't we have yielded?
mustn't you have yielded?
mustn't they have yielded? 	mustn't I have been yielding?
mustn't you have been yielding?
mustn't he have been yielding?
mustn't we have been yielding?
mustn't you have been yielding?
mustn't they have been yielding?