English verb conjugation
COULD FALL

Irregular verb: fall - fell - fallen

Affirmation

Simple form	V-ing form
I could fall you could fall he could fall we could fall you could fall they could fall	I could be falling you could be falling he could be falling we could be falling you could be falling they could be falling
Perfect	V-ing perfect
I could have fallen you could have fallen he could have fallen we could have fallen you could have fallen they could have fallen	I could have been falling you could have been falling he could have been falling we could have been falling you could have been falling they could have been falling

Negation

Simple form	V-ing form
I could not fall you could not fall he could not fall we could not fall you could not fall they could not fall	I could not be falling you could not be falling he could not be falling we could not be falling you could not be falling they could not be falling
Perfect	V-ing perfect
I could not have fallen you could not have fallen he could not have fallen we could not have fallen you could not have fallen they could not have fallen	I could not have been falling you could not have been falling he could not have been falling we could not have been falling you could not have been falling they could not have been falling

Interrogative form

Simple form	V-ing form
could I fall? could you fall? could he fall? could we fall? could you fall? could they fall?	could I be falling? could you be falling? could he be falling? could we be falling? could you be falling? could they be falling?
Perfect	V-ing perfect
could I have fallen? could you have fallen? could he have fallen? could we have fallen? could you have fallen? could they have fallen?	could I have been falling? could you have been falling? could he have been falling? could we have been falling? could you have been falling? could they have been falling?

Interro-negative form

Simple form	V-ing form
could I not fall? could you not fall? could he not fall? could we not fall? could you not fall? could they not fall?	could I not be falling? could you not be falling? could he not be falling? could we not be falling? could you not be falling? could they not be falling?
Perfect	V-ing perfect
could I not have fallen? could you not have fallen? could he not have fallen? could we not have fallen? could you not have fallen? could they not have fallen?	could I not have been falling? could you not have been falling? could he not have been falling? could we not have been falling? could you not have been falling? could they not have been falling?