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