English verb conjugation
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Regular verb: download - downloaded - downloaded

Affirmation

Simple form	V-ing form
I must download you must download he must download we must download you must download they must download	I must be downloading you must be downloading he must be downloading we must be downloading you must be downloading they must be downloading
Perfect	V-ing perfect
I must have downloaded you must have downloaded he must have downloaded we must have downloaded you must have downloaded they must have downloaded	I must have been downloading you must have been downloading he must have been downloading we must have been downloading you must have been downloading they must have been downloading

Negation

Simple form	V-ing form
I mustn't download you mustn't download he mustn't download we mustn't download you mustn't download they mustn't download	I mustn't be downloading you mustn't be downloading he mustn't be downloading we mustn't be downloading you mustn't be downloading they mustn't be downloading
Perfect	V-ing perfect
I mustn't have downloaded you mustn't have downloaded he mustn't have downloaded we mustn't have downloaded you mustn't have downloaded they mustn't have downloaded	I mustn't have been downloading you mustn't have been downloading he mustn't have been downloading we mustn't have been downloading you mustn't have been downloading they mustn't have been downloading

Interrogative form

Simple form	V-ing form
must I download? must you download? must he download? must we download? must you download? must they download?	must I be downloading? must you be downloading? must he be downloading? must we be downloading? must you be downloading? must they be downloading?
Perfect	V-ing perfect
must I have downloaded? must you have downloaded? must he have downloaded? must we have downloaded? must you have downloaded? must they have downloaded?	must I have been downloading? must you have been downloading? must he have been downloading? must we have been downloading? must you have been downloading? must they have been downloading?

Interro-negative form

Simple form	V-ing form
mustn't I download? mustn't you download? mustn't he download? mustn't we download? mustn't you download? mustn't they download?	mustn't I be downloading? mustn't you be downloading? mustn't he be downloading? mustn't we be downloading? mustn't you be downloading? mustn't they be downloading?
Perfect	V-ing perfect
mustn't I have downloaded? mustn't you have downloaded? mustn't he have downloaded? mustn't we have downloaded? mustn't you have downloaded? mustn't they have downloaded?	mustn't I have been downloading? mustn't you have been downloading? mustn't he have been downloading? mustn't we have been downloading? mustn't you have been downloading? mustn't they have been downloading?