must degenerate
Regular verb: degenerate - degenerated- degenerated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not degenerate
you must not degenerate
she must not degenerate
we must not degenerate
you must not degenerate
they must not degenerate 	I must not be degenerating
you must not be degenerating
she must not be degenerating
we must not be degenerating
you must not be degenerating
they must not be degenerating	I must not have degenerated
you must not have degenerated
she must not have degenerated
we must not have degenerated
you must not have degenerated
they must not have degenerated	I must not have been degenerating
you must not have been degenerating
she must not have been degenerating
we must not have been degenerating
you must not have been degenerating
they must not have been degenerating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not degenerate?
must you not degenerate?
must she not degenerate?
must we not degenerate?
must you not degenerate?
must they not degenerate? 	must I not be degenerating?
must you not be degenerating?
must she not be degenerating?
must we not be degenerating?
must you not be degenerating?
must they not be degenerating? 	must I not have degenerated?
must you not have degenerated?
must she not have degenerated?
must we not have degenerated?
must you not have degenerated?
must they not have degenerated? 	must I not have been degenerating?
must you not have been degenerating?
must she not have been degenerating?
must we not have been degenerating?
must you not have been degenerating?
must they not have been degenerating?