English verb conjugation
COULD WRECK

Regular verb: wreck - wrecked - wrecked

Affirmation

Simple form	V-ing form
I could wreck you could wreck he could wreck we could wreck you could wreck they could wreck	I could be wrecking you could be wrecking he could be wrecking we could be wrecking you could be wrecking they could be wrecking
Perfect	V-ing perfect
I could have wrecked you could have wrecked he could have wrecked we could have wrecked you could have wrecked they could have wrecked	I could have been wrecking you could have been wrecking he could have been wrecking we could have been wrecking you could have been wrecking they could have been wrecking

Negation

Simple form	V-ing form
I could not wreck you could not wreck he could not wreck we could not wreck you could not wreck they could not wreck	I could not be wrecking you could not be wrecking he could not be wrecking we could not be wrecking you could not be wrecking they could not be wrecking
Perfect	V-ing perfect
I could not have wrecked you could not have wrecked he could not have wrecked we could not have wrecked you could not have wrecked they could not have wrecked	I could not have been wrecking you could not have been wrecking he could not have been wrecking we could not have been wrecking you could not have been wrecking they could not have been wrecking

Interrogative form

Simple form	V-ing form
could I wreck? could you wreck? could he wreck? could we wreck? could you wreck? could they wreck?	could I be wrecking? could you be wrecking? could he be wrecking? could we be wrecking? could you be wrecking? could they be wrecking?
Perfect	V-ing perfect
could I have wrecked? could you have wrecked? could he have wrecked? could we have wrecked? could you have wrecked? could they have wrecked?	could I have been wrecking? could you have been wrecking? could he have been wrecking? could we have been wrecking? could you have been wrecking? could they have been wrecking?

Interro-negative form

Simple form	V-ing form
could I not wreck? could you not wreck? could he not wreck? could we not wreck? could you not wreck? could they not wreck?	could I not be wrecking? could you not be wrecking? could he not be wrecking? could we not be wrecking? could you not be wrecking? could they not be wrecking?
Perfect	V-ing perfect
could I not have wrecked? could you not have wrecked? could he not have wrecked? could we not have wrecked? could you not have wrecked? could they not have wrecked?	could I not have been wrecking? could you not have been wrecking? could he not have been wrecking? could we not have been wrecking? could you not have been wrecking? could they not have been wrecking?