must reproduce
Regular verb: reproduce - reproduced- reproduced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must reproduce
you must reproduce
she must reproduce
we must reproduce
you must reproduce
they must reproduce 	I must be reproducing
you must be reproducing
she must be reproducing
we must be reproducing
you must be reproducing
they must be reproducing	I must have reproduced
you must have reproduced
she must have reproduced
we must have reproduced
you must have reproduced
they must have reproduced	I must have been reproducing
you must have been reproducing
she must have been reproducing
we must have been reproducing
you must have been reproducing
they must have been reproducing	

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

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