must instant-message
Verbo regular: instant-message - instant-messaged- instant-messaged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must instant-message
you must instant-message
he must instant-message
we must instant-message
you must instant-message
they must instant-message 	I must be instant-messaging
you must be instant-messaging
he must be instant-messaging
we must be instant-messaging
you must be instant-messaging
they must be instant-messaging	I must have instant-messaged
you must have instant-messaged
he must have instant-messaged
we must have instant-messaged
you must have instant-messaged
they must have instant-messaged	I must have been instant-messaging
you must have been instant-messaging
he must have been instant-messaging
we must have been instant-messaging
you must have been instant-messaging
they must have been instant-messaging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't instant-message
you mustn't instant-message
he mustn't instant-message
we mustn't instant-message
you mustn't instant-message
they mustn't instant-message 	I mustn't be instant-messaging
you mustn't be instant-messaging
he mustn't be instant-messaging
we mustn't be instant-messaging
you mustn't be instant-messaging
they mustn't be instant-messaging	I mustn't have instant-messaged
you mustn't have instant-messaged
he mustn't have instant-messaged
we mustn't have instant-messaged
you mustn't have instant-messaged
they mustn't have instant-messaged	I mustn't have been instant-messaging
you mustn't have been instant-messaging
he mustn't have been instant-messaging
we mustn't have been instant-messaging
you mustn't have been instant-messaging
they mustn't have been instant-messaging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I instant-message?
must you instant-message?
must he instant-message?
must we instant-message?
must you instant-message?
must they instant-message? 	must I be instant-messaging?
must you be instant-messaging?
must he be instant-messaging?
must we be instant-messaging?
must you be instant-messaging?
must they be instant-messaging? 	must I have instant-messaged?
must you have instant-messaged?
must he have instant-messaged?
must we have instant-messaged?
must you have instant-messaged?
must they have instant-messaged? 	must I have been instant-messaging?
must you have been instant-messaging?
must he have been instant-messaging?
must we have been instant-messaging?
must you have been instant-messaging?
must they have been instant-messaging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I instant-message?
mustn't you instant-message?
mustn't he instant-message?
mustn't we instant-message?
mustn't you instant-message?
mustn't they instant-message? 	mustn't I be instant-messaging?
mustn't you be instant-messaging?
mustn't he be instant-messaging?
mustn't we be instant-messaging?
mustn't you be instant-messaging?
mustn't they be instant-messaging? 	mustn't I have instant-messaged?
mustn't you have instant-messaged?
mustn't he have instant-messaged?
mustn't we have instant-messaged?
mustn't you have instant-messaged?
mustn't they have instant-messaged? 	mustn't I have been instant-messaging?
mustn't you have been instant-messaging?
mustn't he have been instant-messaging?
mustn't we have been instant-messaging?
mustn't you have been instant-messaging?
mustn't they have been instant-messaging?