I must traverse you must traverse she must traverse we must traverse you must traverse they must traverse
V-ing form
I must be traversing you must be traversing she must be traversing we must be traversing you must be traversing they must be traversing
Perfect
I must have traversed you must have traversed she 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 she 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 she 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 she 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 she 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 she 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 she traverse? must we traverse? must you traverse? must they traverse?
V-ing form
must I be traversing? must you be traversing? must she be traversing? must we be traversing? must you be traversing? must they be traversing?
Perfect
must I have traversed? must you have traversed? must she 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 she 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 she 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 she 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 she 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 she have been traversing? mustn't we have been traversing? mustn't you have been traversing? mustn't they have been traversing?