could precipitate
Regular verb: precipitate - precipitated- precipitated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could precipitate
you could precipitate
he could precipitate
we could precipitate
you could precipitate
they could precipitate 	I could be precipitating
you could be precipitating
he could be precipitating
we could be precipitating
you could be precipitating
they could be precipitating	I could have precipitated
you could have precipitated
he could have precipitated
we could have precipitated
you could have precipitated
they could have precipitated	I could have been precipitating
you could have been precipitating
he could have been precipitating
we could have been precipitating
you could have been precipitating
they could have been precipitating	

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

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