I must download you must download she must download we must download you must download they must download
V-ing form
I must be downloading you must be downloading she must be downloading we must be downloading you must be downloading they must be downloading
Perfect
I must have downloaded you must have downloaded she must have downloaded we must have downloaded you must have downloaded they must have downloaded
V-ing perfect
I must have been downloading you must have been downloading she must have been downloading we must have been downloading you must have been downloading they must have been downloading
Negation
Simple form
I must not download you must not download she must not download we must not download you must not download they must not download
V-ing form
I must not be downloading you must not be downloading she must not be downloading we must not be downloading you must not be downloading they must not be downloading
Perfect
I must not have downloaded you must not have downloaded she must not have downloaded we must not have downloaded you must not have downloaded they must not have downloaded
V-ing perfect
I must not have been downloading you must not have been downloading she must not have been downloading we must not have been downloading you must not have been downloading they must not have been downloading
Interrogative form
Simple form
must I download? must you download? must she download? must we download? must you download? must they download?
V-ing form
must I be downloading? must you be downloading? must she be downloading? must we be downloading? must you be downloading? must they be downloading?
Perfect
must I have downloaded? must you have downloaded? must she have downloaded? must we have downloaded? must you have downloaded? must they have downloaded?
V-ing perfect
must I have been downloading? must you have been downloading? must she have been downloading? must we have been downloading? must you have been downloading? must they have been downloading?
Interro-negative form
Simple form
must I not download? must you not download? must she not download? must we not download? must you not download? must they not download?
V-ing form
must I not be downloading? must you not be downloading? must she not be downloading? must we not be downloading? must you not be downloading? must they not be downloading?
Perfect
must I not have downloaded? must you not have downloaded? must she not have downloaded? must we not have downloaded? must you not have downloaded? must they not have downloaded?
V-ing perfect
must I not have been downloading? must you not have been downloading? must she not have been downloading? must we not have been downloading? must you not have been downloading? must they not have been downloading?