must gem
Verbo regular: gem - gemed- gemed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must gem
you must gem
he must gem
we must gem
you must gem
they must gem 	I must be geming
you must be geming
he must be geming
we must be geming
you must be geming
they must be geming	I must have gemed
you must have gemed
he must have gemed
we must have gemed
you must have gemed
they must have gemed	I must have been geming
you must have been geming
he must have been geming
we must have been geming
you must have been geming
they must have been geming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't gem
you mustn't gem
he mustn't gem
we mustn't gem
you mustn't gem
they mustn't gem 	I mustn't be geming
you mustn't be geming
he mustn't be geming
we mustn't be geming
you mustn't be geming
they mustn't be geming	I mustn't have gemed
you mustn't have gemed
he mustn't have gemed
we mustn't have gemed
you mustn't have gemed
they mustn't have gemed	I mustn't have been geming
you mustn't have been geming
he mustn't have been geming
we mustn't have been geming
you mustn't have been geming
they mustn't have been geming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I gem?
must you gem?
must he gem?
must we gem?
must you gem?
must they gem? 	must I be geming?
must you be geming?
must he be geming?
must we be geming?
must you be geming?
must they be geming? 	must I have gemed?
must you have gemed?
must he have gemed?
must we have gemed?
must you have gemed?
must they have gemed? 	must I have been geming?
must you have been geming?
must he have been geming?
must we have been geming?
must you have been geming?
must they have been geming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I gem?
mustn't you gem?
mustn't he gem?
mustn't we gem?
mustn't you gem?
mustn't they gem? 	mustn't I be geming?
mustn't you be geming?
mustn't he be geming?
mustn't we be geming?
mustn't you be geming?
mustn't they be geming? 	mustn't I have gemed?
mustn't you have gemed?
mustn't he have gemed?
mustn't we have gemed?
mustn't you have gemed?
mustn't they have gemed? 	mustn't I have been geming?
mustn't you have been geming?
mustn't he have been geming?
mustn't we have been geming?
mustn't you have been geming?
mustn't they have been geming?