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