must fly-fish
Verbo regular: fly-fish - fly-fished- fly-fished

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must fly-fish
you must fly-fish
he must fly-fish
we must fly-fish
you must fly-fish
they must fly-fish 	I must be fly-fishing
you must be fly-fishing
he must be fly-fishing
we must be fly-fishing
you must be fly-fishing
they must be fly-fishing	I must have fly-fished
you must have fly-fished
he must have fly-fished
we must have fly-fished
you must have fly-fished
they must have fly-fished	I must have been fly-fishing
you must have been fly-fishing
he must have been fly-fishing
we must have been fly-fishing
you must have been fly-fishing
they must have been fly-fishing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't fly-fish
you mustn't fly-fish
he mustn't fly-fish
we mustn't fly-fish
you mustn't fly-fish
they mustn't fly-fish 	I mustn't be fly-fishing
you mustn't be fly-fishing
he mustn't be fly-fishing
we mustn't be fly-fishing
you mustn't be fly-fishing
they mustn't be fly-fishing	I mustn't have fly-fished
you mustn't have fly-fished
he mustn't have fly-fished
we mustn't have fly-fished
you mustn't have fly-fished
they mustn't have fly-fished	I mustn't have been fly-fishing
you mustn't have been fly-fishing
he mustn't have been fly-fishing
we mustn't have been fly-fishing
you mustn't have been fly-fishing
they mustn't have been fly-fishing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I fly-fish?
must you fly-fish?
must he fly-fish?
must we fly-fish?
must you fly-fish?
must they fly-fish? 	must I be fly-fishing?
must you be fly-fishing?
must he be fly-fishing?
must we be fly-fishing?
must you be fly-fishing?
must they be fly-fishing? 	must I have fly-fished?
must you have fly-fished?
must he have fly-fished?
must we have fly-fished?
must you have fly-fished?
must they have fly-fished? 	must I have been fly-fishing?
must you have been fly-fishing?
must he have been fly-fishing?
must we have been fly-fishing?
must you have been fly-fishing?
must they have been fly-fishing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I fly-fish?
mustn't you fly-fish?
mustn't he fly-fish?
mustn't we fly-fish?
mustn't you fly-fish?
mustn't they fly-fish? 	mustn't I be fly-fishing?
mustn't you be fly-fishing?
mustn't he be fly-fishing?
mustn't we be fly-fishing?
mustn't you be fly-fishing?
mustn't they be fly-fishing? 	mustn't I have fly-fished?
mustn't you have fly-fished?
mustn't he have fly-fished?
mustn't we have fly-fished?
mustn't you have fly-fished?
mustn't they have fly-fished? 	mustn't I have been fly-fishing?
mustn't you have been fly-fishing?
mustn't he have been fly-fishing?
mustn't we have been fly-fishing?
mustn't you have been fly-fishing?
mustn't they have been fly-fishing?