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