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