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