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