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