must degenerate
Verbo regular: degenerate - degenerated- degenerated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must degenerate
you must degenerate
she must degenerate
we must degenerate
you must degenerate
they must degenerate 	I must be degenerating
you must be degenerating
she must be degenerating
we must be degenerating
you must be degenerating
they must be degenerating	I must have degenerated
you must have degenerated
she 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
she must have been degenerating
we must have been degenerating
you must have been degenerating
they must have been degenerating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't degenerate
you mustn't degenerate
she 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
she 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
she 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
she 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 com V-ing 	Perfeito 	Perfeito com V-ing 	
must I degenerate?
must you degenerate?
must she degenerate?
must we degenerate?
must you degenerate?
must they degenerate? 	must I be degenerating?
must you be degenerating?
must she be degenerating?
must we be degenerating?
must you be degenerating?
must they be degenerating? 	must I have degenerated?
must you have degenerated?
must she 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 she have been degenerating?
must we have been degenerating?
must you have been degenerating?
must they have been degenerating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I degenerate?
mustn't you degenerate?
mustn't she 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 she 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 she 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 she have been degenerating?
mustn't we have been degenerating?
mustn't you have been degenerating?
mustn't they have been degenerating?