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