English verb conjugation
COULD LURK

Regular verb: lurk - lurked - lurked

Affirmation

Simple form	V-ing form
I could lurk you could lurk he could lurk we could lurk you could lurk they could lurk	I could be lurking you could be lurking he could be lurking we could be lurking you could be lurking they could be lurking
Perfect	V-ing perfect
I could have lurked you could have lurked he could have lurked we could have lurked you could have lurked they could have lurked	I could have been lurking you could have been lurking he could have been lurking we could have been lurking you could have been lurking they could have been lurking

Negation

Simple form	V-ing form
I could not lurk you could not lurk he could not lurk we could not lurk you could not lurk they could not lurk	I could not be lurking you could not be lurking he could not be lurking we could not be lurking you could not be lurking they could not be lurking
Perfect	V-ing perfect
I could not have lurked you could not have lurked he could not have lurked we could not have lurked you could not have lurked they could not have lurked	I could not have been lurking you could not have been lurking he could not have been lurking we could not have been lurking you could not have been lurking they could not have been lurking

Interrogative form

Simple form	V-ing form
could I lurk? could you lurk? could he lurk? could we lurk? could you lurk? could they lurk?	could I be lurking? could you be lurking? could he be lurking? could we be lurking? could you be lurking? could they be lurking?
Perfect	V-ing perfect
could I have lurked? could you have lurked? could he have lurked? could we have lurked? could you have lurked? could they have lurked?	could I have been lurking? could you have been lurking? could he have been lurking? could we have been lurking? could you have been lurking? could they have been lurking?

Interro-negative form

Simple form	V-ing form
could I not lurk? could you not lurk? could he not lurk? could we not lurk? could you not lurk? could they not lurk?	could I not be lurking? could you not be lurking? could he not be lurking? could we not be lurking? could you not be lurking? could they not be lurking?
Perfect	V-ing perfect
could I not have lurked? could you not have lurked? could he not have lurked? could we not have lurked? could you not have lurked? could they not have lurked?	could I not have been lurking? could you not have been lurking? could he not have been lurking? could we not have been lurking? could you not have been lurking? could they not have been lurking?