I must scavenge you must scavenge he must scavenge we must scavenge you must scavenge they must scavenge
V-ing form
I must be scavenging you must be scavenging he must be scavenging we must be scavenging you must be scavenging they must be scavenging
Perfect
I must have scavenged you must have scavenged he must have scavenged we must have scavenged you must have scavenged they must have scavenged
V-ing perfect
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
I must not scavenge you must not scavenge he must not scavenge we must not scavenge you must not scavenge they must not scavenge
V-ing form
I must not be scavenging you must not be scavenging he must not be scavenging we must not be scavenging you must not be scavenging they must not be scavenging
Perfect
I must not have scavenged you must not have scavenged he must not have scavenged we must not have scavenged you must not have scavenged they must not have scavenged
V-ing perfect
I must not have been scavenging you must not have been scavenging he must not have been scavenging we must not have been scavenging you must not have been scavenging they must not have been scavenging
Interrogative form
Simple form
must I scavenge? must you scavenge? must he scavenge? must we scavenge? must you scavenge? must they scavenge?
V-ing form
must I be scavenging? must you be scavenging? must he be scavenging? must we be scavenging? must you be scavenging? must they be scavenging?
Perfect
must I have scavenged? must you have scavenged? must he have scavenged? must we have scavenged? must you have scavenged? must they have scavenged?
V-ing perfect
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
must I not scavenge? must you not scavenge? must he not scavenge? must we not scavenge? must you not scavenge? must they not scavenge?
V-ing form
must I not be scavenging? must you not be scavenging? must he not be scavenging? must we not be scavenging? must you not be scavenging? must they not be scavenging?
Perfect
must I not have scavenged? must you not have scavenged? must he not have scavenged? must we not have scavenged? must you not have scavenged? must they not have scavenged?
V-ing perfect
must I not have been scavenging? must you not have been scavenging? must he not have been scavenging? must we not have been scavenging? must you not have been scavenging? must they not have been scavenging?