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