must disappoint
Verbo regular: disappoint - disappointed- disappointed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must disappoint
you must disappoint
he must disappoint
we must disappoint
you must disappoint
they must disappoint 	I must be disappointing
you must be disappointing
he must be disappointing
we must be disappointing
you must be disappointing
they must be disappointing	I must have disappointed
you must have disappointed
he must have disappointed
we must have disappointed
you must have disappointed
they must have disappointed	I must have been disappointing
you must have been disappointing
he must have been disappointing
we must have been disappointing
you must have been disappointing
they must have been disappointing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't disappoint
you mustn't disappoint
he mustn't disappoint
we mustn't disappoint
you mustn't disappoint
they mustn't disappoint 	I mustn't be disappointing
you mustn't be disappointing
he mustn't be disappointing
we mustn't be disappointing
you mustn't be disappointing
they mustn't be disappointing	I mustn't have disappointed
you mustn't have disappointed
he mustn't have disappointed
we mustn't have disappointed
you mustn't have disappointed
they mustn't have disappointed	I mustn't have been disappointing
you mustn't have been disappointing
he mustn't have been disappointing
we mustn't have been disappointing
you mustn't have been disappointing
they mustn't have been disappointing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I disappoint?
must you disappoint?
must he disappoint?
must we disappoint?
must you disappoint?
must they disappoint? 	must I be disappointing?
must you be disappointing?
must he be disappointing?
must we be disappointing?
must you be disappointing?
must they be disappointing? 	must I have disappointed?
must you have disappointed?
must he have disappointed?
must we have disappointed?
must you have disappointed?
must they have disappointed? 	must I have been disappointing?
must you have been disappointing?
must he have been disappointing?
must we have been disappointing?
must you have been disappointing?
must they have been disappointing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I disappoint?
mustn't you disappoint?
mustn't he disappoint?
mustn't we disappoint?
mustn't you disappoint?
mustn't they disappoint? 	mustn't I be disappointing?
mustn't you be disappointing?
mustn't he be disappointing?
mustn't we be disappointing?
mustn't you be disappointing?
mustn't they be disappointing? 	mustn't I have disappointed?
mustn't you have disappointed?
mustn't he have disappointed?
mustn't we have disappointed?
mustn't you have disappointed?
mustn't they have disappointed? 	mustn't I have been disappointing?
mustn't you have been disappointing?
mustn't he have been disappointing?
mustn't we have been disappointing?
mustn't you have been disappointing?
mustn't they have been disappointing?