I must traverse you must traverse he must traverse we must traverse you must traverse they must traverse
V-ing form
I must be traversing you must be traversing he must be traversing we must be traversing you must be traversing they must be traversing
Perfect
I must have traversed you must have traversed he must have traversed we must have traversed you must have traversed they must have traversed
V-ing perfect
I must have been traversing you must have been traversing he must have been traversing we must have been traversing you must have been traversing they must have been traversing
Negation
Simple form
I mustn't traverse you mustn't traverse he mustn't traverse we mustn't traverse you mustn't traverse they mustn't traverse
V-ing form
I mustn't be traversing you mustn't be traversing he mustn't be traversing we mustn't be traversing you mustn't be traversing they mustn't be traversing
Perfect
I mustn't have traversed you mustn't have traversed he mustn't have traversed we mustn't have traversed you mustn't have traversed they mustn't have traversed
V-ing perfect
I mustn't have been traversing you mustn't have been traversing he mustn't have been traversing we mustn't have been traversing you mustn't have been traversing they mustn't have been traversing
Interrogative form
Simple form
must I traverse? must you traverse? must he traverse? must we traverse? must you traverse? must they traverse?
V-ing form
must I be traversing? must you be traversing? must he be traversing? must we be traversing? must you be traversing? must they be traversing?
Perfect
must I have traversed? must you have traversed? must he have traversed? must we have traversed? must you have traversed? must they have traversed?
V-ing perfect
must I have been traversing? must you have been traversing? must he have been traversing? must we have been traversing? must you have been traversing? must they have been traversing?
Interro-negative form
Simple form
mustn't I traverse? mustn't you traverse? mustn't he traverse? mustn't we traverse? mustn't you traverse? mustn't they traverse?
V-ing form
mustn't I be traversing? mustn't you be traversing? mustn't he be traversing? mustn't we be traversing? mustn't you be traversing? mustn't they be traversing?
Perfect
mustn't I have traversed? mustn't you have traversed? mustn't he have traversed? mustn't we have traversed? mustn't you have traversed? mustn't they have traversed?
V-ing perfect
mustn't I have been traversing? mustn't you have been traversing? mustn't he have been traversing? mustn't we have been traversing? mustn't you have been traversing? mustn't they have been traversing?