I must share you must share he must share we must share you must share they must share
V-ing form
I must be sharing you must be sharing he must be sharing we must be sharing you must be sharing they must be sharing
Perfect
I must have shared you must have shared he must have shared we must have shared you must have shared they must have shared
V-ing perfect
I must have been sharing you must have been sharing he must have been sharing we must have been sharing you must have been sharing they must have been sharing
Negation
Simple form
I must not share you must not share he must not share we must not share you must not share they must not share
V-ing form
I must not be sharing you must not be sharing he must not be sharing we must not be sharing you must not be sharing they must not be sharing
Perfect
I must not have shared you must not have shared he must not have shared we must not have shared you must not have shared they must not have shared
V-ing perfect
I must not have been sharing you must not have been sharing he must not have been sharing we must not have been sharing you must not have been sharing they must not have been sharing
Interrogative form
Simple form
must I share? must you share? must he share? must we share? must you share? must they share?
V-ing form
must I be sharing? must you be sharing? must he be sharing? must we be sharing? must you be sharing? must they be sharing?
Perfect
must I have shared? must you have shared? must he have shared? must we have shared? must you have shared? must they have shared?
V-ing perfect
must I have been sharing? must you have been sharing? must he have been sharing? must we have been sharing? must you have been sharing? must they have been sharing?
Interro-negative form
Simple form
must I not share? must you not share? must he not share? must we not share? must you not share? must they not share?
V-ing form
must I not be sharing? must you not be sharing? must he not be sharing? must we not be sharing? must you not be sharing? must they not be sharing?
Perfect
must I not have shared? must you not have shared? must he not have shared? must we not have shared? must you not have shared? must they not have shared?
V-ing perfect
must I not have been sharing? must you not have been sharing? must he not have been sharing? must we not have been sharing? must you not have been sharing? must they not have been sharing?