must download
Regular verb: download - downloaded- downloaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must download
you must download
she must download
we must download
you must download
they must download 	I must be downloading
you must be downloading
she must be downloading
we must be downloading
you must be downloading
they must be downloading	I must have downloaded
you must have downloaded
she 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
she 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 	Perfect 	V-ing perfect 	
I must not download
you must not download
she must not download
we must not download
you must not download
they must not download 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
must I download?
must you download?
must she download?
must we download?
must you download?
must they download? 	must I be downloading?
must you be downloading?
must she be downloading?
must we be downloading?
must you be downloading?
must they be downloading? 	must I have downloaded?
must you have downloaded?
must she 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 she 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 	Perfect 	V-ing perfect 	
must I not download?
must you not download?
must she not download?
must we not download?
must you not download?
must they not download? 	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? 	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? 	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?