I must encourage you must encourage she must encourage we must encourage you must encourage they must encourage
V-ing form
I must be encouraging you must be encouraging she must be encouraging we must be encouraging you must be encouraging they must be encouraging
Perfect
I must have encouraged you must have encouraged she must have encouraged we must have encouraged you must have encouraged they must have encouraged
V-ing perfect
I must have been encouraging you must have been encouraging she must have been encouraging we must have been encouraging you must have been encouraging they must have been encouraging
Negation
Simple form
I mustn't encourage you mustn't encourage she mustn't encourage we mustn't encourage you mustn't encourage they mustn't encourage
V-ing form
I mustn't be encouraging you mustn't be encouraging she mustn't be encouraging we mustn't be encouraging you mustn't be encouraging they mustn't be encouraging
Perfect
I mustn't have encouraged you mustn't have encouraged she mustn't have encouraged we mustn't have encouraged you mustn't have encouraged they mustn't have encouraged
V-ing perfect
I mustn't have been encouraging you mustn't have been encouraging she mustn't have been encouraging we mustn't have been encouraging you mustn't have been encouraging they mustn't have been encouraging
Interrogative form
Simple form
must I encourage? must you encourage? must she encourage? must we encourage? must you encourage? must they encourage?
V-ing form
must I be encouraging? must you be encouraging? must she be encouraging? must we be encouraging? must you be encouraging? must they be encouraging?
Perfect
must I have encouraged? must you have encouraged? must she have encouraged? must we have encouraged? must you have encouraged? must they have encouraged?
V-ing perfect
must I have been encouraging? must you have been encouraging? must she have been encouraging? must we have been encouraging? must you have been encouraging? must they have been encouraging?
Interro-negative form
Simple form
mustn't I encourage? mustn't you encourage? mustn't she encourage? mustn't we encourage? mustn't you encourage? mustn't they encourage?
V-ing form
mustn't I be encouraging? mustn't you be encouraging? mustn't she be encouraging? mustn't we be encouraging? mustn't you be encouraging? mustn't they be encouraging?
Perfect
mustn't I have encouraged? mustn't you have encouraged? mustn't she have encouraged? mustn't we have encouraged? mustn't you have encouraged? mustn't they have encouraged?
V-ing perfect
mustn't I have been encouraging? mustn't you have been encouraging? mustn't she have been encouraging? mustn't we have been encouraging? mustn't you have been encouraging? mustn't they have been encouraging?