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