must key
Verbo regolare: key - keyed- keyed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must key
you must key
he must key
we must key
you must key
they must key 	I must be keying
you must be keying
he must be keying
we must be keying
you must be keying
they must be keying	I must have keyed
you must have keyed
he must have keyed
we must have keyed
you must have keyed
they must have keyed	I must have been keying
you must have been keying
he must have been keying
we must have been keying
you must have been keying
they must have been keying	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't key
you mustn't key
he mustn't key
we mustn't key
you mustn't key
they mustn't key 	I mustn't be keying
you mustn't be keying
he mustn't be keying
we mustn't be keying
you mustn't be keying
they mustn't be keying	I mustn't have keyed
you mustn't have keyed
he mustn't have keyed
we mustn't have keyed
you mustn't have keyed
they mustn't have keyed	I mustn't have been keying
you mustn't have been keying
he mustn't have been keying
we mustn't have been keying
you mustn't have been keying
they mustn't have been keying	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I key?
must you key?
must he key?
must we key?
must you key?
must they key? 	must I be keying?
must you be keying?
must he be keying?
must we be keying?
must you be keying?
must they be keying? 	must I have keyed?
must you have keyed?
must he have keyed?
must we have keyed?
must you have keyed?
must they have keyed? 	must I have been keying?
must you have been keying?
must he have been keying?
must we have been keying?
must you have been keying?
must they have been keying? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I key?
mustn't you key?
mustn't he key?
mustn't we key?
mustn't you key?
mustn't they key? 	mustn't I be keying?
mustn't you be keying?
mustn't he be keying?
mustn't we be keying?
mustn't you be keying?
mustn't they be keying? 	mustn't I have keyed?
mustn't you have keyed?
mustn't he have keyed?
mustn't we have keyed?
mustn't you have keyed?
mustn't they have keyed? 	mustn't I have been keying?
mustn't you have been keying?
mustn't he have been keying?
mustn't we have been keying?
mustn't you have been keying?
mustn't they have been keying?