must scavenge
Regular verb: scavenge - scavenged- scavenged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must scavenge
you must scavenge
he must scavenge
we must scavenge
you must scavenge
they must scavenge 	I must be scavenging
you must be scavenging
he must be scavenging
we must be scavenging
you must be scavenging
they must be scavenging	I must have scavenged
you must have scavenged
he must have scavenged
we must have scavenged
you must have scavenged
they must have scavenged	I must have been scavenging
you must have been scavenging
he must have been scavenging
we must have been scavenging
you must have been scavenging
they must have been scavenging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't scavenge
you mustn't scavenge
he mustn't scavenge
we mustn't scavenge
you mustn't scavenge
they mustn't scavenge 	I mustn't be scavenging
you mustn't be scavenging
he mustn't be scavenging
we mustn't be scavenging
you mustn't be scavenging
they mustn't be scavenging	I mustn't have scavenged
you mustn't have scavenged
he mustn't have scavenged
we mustn't have scavenged
you mustn't have scavenged
they mustn't have scavenged	I mustn't have been scavenging
you mustn't have been scavenging
he mustn't have been scavenging
we mustn't have been scavenging
you mustn't have been scavenging
they mustn't have been scavenging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I scavenge?
must you scavenge?
must he scavenge?
must we scavenge?
must you scavenge?
must they scavenge? 	must I be scavenging?
must you be scavenging?
must he be scavenging?
must we be scavenging?
must you be scavenging?
must they be scavenging? 	must I have scavenged?
must you have scavenged?
must he have scavenged?
must we have scavenged?
must you have scavenged?
must they have scavenged? 	must I have been scavenging?
must you have been scavenging?
must he have been scavenging?
must we have been scavenging?
must you have been scavenging?
must they have been scavenging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I scavenge?
mustn't you scavenge?
mustn't he scavenge?
mustn't we scavenge?
mustn't you scavenge?
mustn't they scavenge? 	mustn't I be scavenging?
mustn't you be scavenging?
mustn't he be scavenging?
mustn't we be scavenging?
mustn't you be scavenging?
mustn't they be scavenging? 	mustn't I have scavenged?
mustn't you have scavenged?
mustn't he have scavenged?
mustn't we have scavenged?
mustn't you have scavenged?
mustn't they have scavenged? 	mustn't I have been scavenging?
mustn't you have been scavenging?
mustn't he have been scavenging?
mustn't we have been scavenging?
mustn't you have been scavenging?
mustn't they have been scavenging?