I can precipitate you can precipitate he can precipitate we can precipitate you can precipitate they can precipitate
V-ing form
I can be precipitating you can be precipitating he can be precipitating we can be precipitating you can be precipitating they can be precipitating
Perfect
I can have precipitated you can have precipitated he can have precipitated we can have precipitated you can have precipitated they can have precipitated
V-ing perfect
I can have been precipitating you can have been precipitating he can have been precipitating we can have been precipitating you can have been precipitating they can have been precipitating
Negation
Simple form
I cannot precipitate you cannot precipitate he cannot precipitate we cannot precipitate you cannot precipitate they cannot precipitate
V-ing form
I cannot be precipitating you cannot be precipitating he cannot be precipitating we cannot be precipitating you cannot be precipitating they cannot be precipitating
Perfect
I cannot have precipitated you cannot have precipitated he cannot have precipitated we cannot have precipitated you cannot have precipitated they cannot have precipitated
V-ing perfect
I cannot have been precipitating you cannot have been precipitating he cannot have been precipitating we cannot have been precipitating you cannot have been precipitating they cannot have been precipitating
Interrogative form
Simple form
can I precipitate? can you precipitate? can he precipitate? can we precipitate? can you precipitate? can they precipitate?
V-ing form
can I be precipitating? can you be precipitating? can he be precipitating? can we be precipitating? can you be precipitating? can they be precipitating?
Perfect
can I have precipitated? can you have precipitated? can he have precipitated? can we have precipitated? can you have precipitated? can they have precipitated?
V-ing perfect
can I have been precipitating? can you have been precipitating? can he have been precipitating? can we have been precipitating? can you have been precipitating? can they have been precipitating?
Interro-negative form
Simple form
can I not precipitate? can you not precipitate? can he not precipitate? can we not precipitate? can you not precipitate? can they not precipitate?
V-ing form
can I not be precipitating? can you not be precipitating? can he not be precipitating? can we not be precipitating? can you not be precipitating? can they not be precipitating?
Perfect
can I not have precipitated? can you not have precipitated? can he not have precipitated? can we not have precipitated? can you not have precipitated? can they not have precipitated?
V-ing perfect
can I not have been precipitating? can you not have been precipitating? can he not have been precipitating? can we not have been precipitating? can you not have been precipitating? can they not have been precipitating?