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 couldn't fall you couldn't fall he couldn't fall we couldn't fall you couldn't fall they couldn't fall	I couldn't be falling you couldn't be falling he couldn't be falling we couldn't be falling you couldn't be falling they couldn't be falling
Perfect	V-ing perfect
I couldn't have fallen you couldn't have fallen he couldn't have fallen we couldn't have fallen you couldn't have fallen they couldn't have fallen	I couldn't have been falling you couldn't have been falling he couldn't have been falling we couldn't have been falling you couldn't have been falling they couldn't 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
couldn't I fall? couldn't you fall? couldn't he fall? couldn't we fall? couldn't you fall? couldn't they fall?	couldn't I be falling? couldn't you be falling? couldn't he be falling? couldn't we be falling? couldn't you be falling? couldn't they be falling?
Perfect	V-ing perfect
couldn't I have fallen? couldn't you have fallen? couldn't he have fallen? couldn't we have fallen? couldn't you have fallen? couldn't they have fallen?	couldn't I have been falling? couldn't you have been falling? couldn't he have been falling? couldn't we have been falling? couldn't you have been falling? couldn't they have been falling?