I must comfort you must comfort he must comfort we must comfort you must comfort they must comfort
V-ing form
I must be comforting you must be comforting he must be comforting we must be comforting you must be comforting they must be comforting
Perfect
I must have comforted you must have comforted he must have comforted we must have comforted you must have comforted they must have comforted
V-ing perfect
I must have been comforting you must have been comforting he must have been comforting we must have been comforting you must have been comforting they must have been comforting
Negation
Simple form
I must not comfort you must not comfort he must not comfort we must not comfort you must not comfort they must not comfort
V-ing form
I must not be comforting you must not be comforting he must not be comforting we must not be comforting you must not be comforting they must not be comforting
Perfect
I must not have comforted you must not have comforted he must not have comforted we must not have comforted you must not have comforted they must not have comforted
V-ing perfect
I must not have been comforting you must not have been comforting he must not have been comforting we must not have been comforting you must not have been comforting they must not have been comforting
Interrogative form
Simple form
must I comfort? must you comfort? must he comfort? must we comfort? must you comfort? must they comfort?
V-ing form
must I be comforting? must you be comforting? must he be comforting? must we be comforting? must you be comforting? must they be comforting?
Perfect
must I have comforted? must you have comforted? must he have comforted? must we have comforted? must you have comforted? must they have comforted?
V-ing perfect
must I have been comforting? must you have been comforting? must he have been comforting? must we have been comforting? must you have been comforting? must they have been comforting?
Interro-negative form
Simple form
must I not comfort? must you not comfort? must he not comfort? must we not comfort? must you not comfort? must they not comfort?
V-ing form
must I not be comforting? must you not be comforting? must he not be comforting? must we not be comforting? must you not be comforting? must they not be comforting?
Perfect
must I not have comforted? must you not have comforted? must he not have comforted? must we not have comforted? must you not have comforted? must they not have comforted?
V-ing perfect
must I not have been comforting? must you not have been comforting? must he not have been comforting? must we not have been comforting? must you not have been comforting? must they not have been comforting?