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