I must famish you must famish he must famish we must famish you must famish they must famish
V-ing form
I must be famishing you must be famishing he must be famishing we must be famishing you must be famishing they must be famishing
Perfect
I must have famished you must have famished he must have famished we must have famished you must have famished they must have famished
V-ing perfect
I must have been famishing you must have been famishing he must have been famishing we must have been famishing you must have been famishing they must have been famishing
Negation
Simple form
I must not famish you must not famish he must not famish we must not famish you must not famish they must not famish
V-ing form
I must not be famishing you must not be famishing he must not be famishing we must not be famishing you must not be famishing they must not be famishing
Perfect
I must not have famished you must not have famished he must not have famished we must not have famished you must not have famished they must not have famished
V-ing perfect
I must not have been famishing you must not have been famishing he must not have been famishing we must not have been famishing you must not have been famishing they must not have been famishing
Interrogative form
Simple form
must I famish? must you famish? must he famish? must we famish? must you famish? must they famish?
V-ing form
must I be famishing? must you be famishing? must he be famishing? must we be famishing? must you be famishing? must they be famishing?
Perfect
must I have famished? must you have famished? must he have famished? must we have famished? must you have famished? must they have famished?
V-ing perfect
must I have been famishing? must you have been famishing? must he have been famishing? must we have been famishing? must you have been famishing? must they have been famishing?
Interro-negative form
Simple form
must I not famish? must you not famish? must he not famish? must we not famish? must you not famish? must they not famish?
V-ing form
must I not be famishing? must you not be famishing? must he not be famishing? must we not be famishing? must you not be famishing? must they not be famishing?
Perfect
must I not have famished? must you not have famished? must he not have famished? must we not have famished? must you not have famished? must they not have famished?
V-ing perfect
must I not have been famishing? must you not have been famishing? must he not have been famishing? must we not have been famishing? must you not have been famishing? must they not have been famishing?