must tomb
Verbo regular: tomb - tombed- tombed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must tomb
you must tomb
he must tomb
we must tomb
you must tomb
they must tomb 	I must be tombing
you must be tombing
he must be tombing
we must be tombing
you must be tombing
they must be tombing	I must have tombed
you must have tombed
he must have tombed
we must have tombed
you must have tombed
they must have tombed	I must have been tombing
you must have been tombing
he must have been tombing
we must have been tombing
you must have been tombing
they must have been tombing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't tomb
you mustn't tomb
he mustn't tomb
we mustn't tomb
you mustn't tomb
they mustn't tomb 	I mustn't be tombing
you mustn't be tombing
he mustn't be tombing
we mustn't be tombing
you mustn't be tombing
they mustn't be tombing	I mustn't have tombed
you mustn't have tombed
he mustn't have tombed
we mustn't have tombed
you mustn't have tombed
they mustn't have tombed	I mustn't have been tombing
you mustn't have been tombing
he mustn't have been tombing
we mustn't have been tombing
you mustn't have been tombing
they mustn't have been tombing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I tomb?
must you tomb?
must he tomb?
must we tomb?
must you tomb?
must they tomb? 	must I be tombing?
must you be tombing?
must he be tombing?
must we be tombing?
must you be tombing?
must they be tombing? 	must I have tombed?
must you have tombed?
must he have tombed?
must we have tombed?
must you have tombed?
must they have tombed? 	must I have been tombing?
must you have been tombing?
must he have been tombing?
must we have been tombing?
must you have been tombing?
must they have been tombing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I tomb?
mustn't you tomb?
mustn't he tomb?
mustn't we tomb?
mustn't you tomb?
mustn't they tomb? 	mustn't I be tombing?
mustn't you be tombing?
mustn't he be tombing?
mustn't we be tombing?
mustn't you be tombing?
mustn't they be tombing? 	mustn't I have tombed?
mustn't you have tombed?
mustn't he have tombed?
mustn't we have tombed?
mustn't you have tombed?
mustn't they have tombed? 	mustn't I have been tombing?
mustn't you have been tombing?
mustn't he have been tombing?
mustn't we have been tombing?
mustn't you have been tombing?
mustn't they have been tombing?