must succeed
Verbo regular: succeed - succeeded- succeeded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must succeed
you must succeed
she must succeed
we must succeed
you must succeed
they must succeed 	I must be succeeding
you must be succeeding
she must be succeeding
we must be succeeding
you must be succeeding
they must be succeeding	I must have succeeded
you must have succeeded
she must have succeeded
we must have succeeded
you must have succeeded
they must have succeeded	I must have been succeeding
you must have been succeeding
she must have been succeeding
we must have been succeeding
you must have been succeeding
they must have been succeeding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't succeed
you mustn't succeed
she mustn't succeed
we mustn't succeed
you mustn't succeed
they mustn't succeed 	I mustn't be succeeding
you mustn't be succeeding
she mustn't be succeeding
we mustn't be succeeding
you mustn't be succeeding
they mustn't be succeeding	I mustn't have succeeded
you mustn't have succeeded
she mustn't have succeeded
we mustn't have succeeded
you mustn't have succeeded
they mustn't have succeeded	I mustn't have been succeeding
you mustn't have been succeeding
she mustn't have been succeeding
we mustn't have been succeeding
you mustn't have been succeeding
they mustn't have been succeeding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I succeed?
must you succeed?
must she succeed?
must we succeed?
must you succeed?
must they succeed? 	must I be succeeding?
must you be succeeding?
must she be succeeding?
must we be succeeding?
must you be succeeding?
must they be succeeding? 	must I have succeeded?
must you have succeeded?
must she have succeeded?
must we have succeeded?
must you have succeeded?
must they have succeeded? 	must I have been succeeding?
must you have been succeeding?
must she have been succeeding?
must we have been succeeding?
must you have been succeeding?
must they have been succeeding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I succeed?
mustn't you succeed?
mustn't she succeed?
mustn't we succeed?
mustn't you succeed?
mustn't they succeed? 	mustn't I be succeeding?
mustn't you be succeeding?
mustn't she be succeeding?
mustn't we be succeeding?
mustn't you be succeeding?
mustn't they be succeeding? 	mustn't I have succeeded?
mustn't you have succeeded?
mustn't she have succeeded?
mustn't we have succeeded?
mustn't you have succeeded?
mustn't they have succeeded? 	mustn't I have been succeeding?
mustn't you have been succeeding?
mustn't she have been succeeding?
mustn't we have been succeeding?
mustn't you have been succeeding?
mustn't they have been succeeding?