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