must degenerate
Verbo regular: degenerate - degenerated- degenerated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must degenerate
you must degenerate
he must degenerate
we must degenerate
you must degenerate
they must degenerate 	I must be degenerating
you must be degenerating
he must be degenerating
we must be degenerating
you must be degenerating
they must be degenerating	I must have degenerated
you must have degenerated
he must have degenerated
we must have degenerated
you must have degenerated
they must have degenerated	I must have been degenerating
you must have been degenerating
he must have been degenerating
we must have been degenerating
you must have been degenerating
they must have been degenerating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't degenerate
you mustn't degenerate
he mustn't degenerate
we mustn't degenerate
you mustn't degenerate
they mustn't degenerate 	I mustn't be degenerating
you mustn't be degenerating
he mustn't be degenerating
we mustn't be degenerating
you mustn't be degenerating
they mustn't be degenerating	I mustn't have degenerated
you mustn't have degenerated
he mustn't have degenerated
we mustn't have degenerated
you mustn't have degenerated
they mustn't have degenerated	I mustn't have been degenerating
you mustn't have been degenerating
he mustn't have been degenerating
we mustn't have been degenerating
you mustn't have been degenerating
they mustn't have been degenerating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I degenerate?
must you degenerate?
must he degenerate?
must we degenerate?
must you degenerate?
must they degenerate? 	must I be degenerating?
must you be degenerating?
must he be degenerating?
must we be degenerating?
must you be degenerating?
must they be degenerating? 	must I have degenerated?
must you have degenerated?
must he have degenerated?
must we have degenerated?
must you have degenerated?
must they have degenerated? 	must I have been degenerating?
must you have been degenerating?
must he have been degenerating?
must we have been degenerating?
must you have been degenerating?
must they have been degenerating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I degenerate?
mustn't you degenerate?
mustn't he degenerate?
mustn't we degenerate?
mustn't you degenerate?
mustn't they degenerate? 	mustn't I be degenerating?
mustn't you be degenerating?
mustn't he be degenerating?
mustn't we be degenerating?
mustn't you be degenerating?
mustn't they be degenerating? 	mustn't I have degenerated?
mustn't you have degenerated?
mustn't he have degenerated?
mustn't we have degenerated?
mustn't you have degenerated?
mustn't they have degenerated? 	mustn't I have been degenerating?
mustn't you have been degenerating?
mustn't he have been degenerating?
mustn't we have been degenerating?
mustn't you have been degenerating?
mustn't they have been degenerating?