English verb conjugation
COULD CROSS-POST

Regular verb: cross-post - cross-posted - cross-posted

Affirmation

Simple form	V-ing form
I could cross-post you could cross-post he could cross-post we could cross-post you could cross-post they could cross-post	I could be cross-posting you could be cross-posting he could be cross-posting we could be cross-posting you could be cross-posting they could be cross-posting
Perfect	V-ing perfect
I could have cross-posted you could have cross-posted he could have cross-posted we could have cross-posted you could have cross-posted they could have cross-posted	I could have been cross-posting you could have been cross-posting he could have been cross-posting we could have been cross-posting you could have been cross-posting they could have been cross-posting

Negation

Simple form	V-ing form
I couldn't cross-post you couldn't cross-post he couldn't cross-post we couldn't cross-post you couldn't cross-post they couldn't cross-post	I couldn't be cross-posting you couldn't be cross-posting he couldn't be cross-posting we couldn't be cross-posting you couldn't be cross-posting they couldn't be cross-posting
Perfect	V-ing perfect
I couldn't have cross-posted you couldn't have cross-posted he couldn't have cross-posted we couldn't have cross-posted you couldn't have cross-posted they couldn't have cross-posted	I couldn't have been cross-posting you couldn't have been cross-posting he couldn't have been cross-posting we couldn't have been cross-posting you couldn't have been cross-posting they couldn't have been cross-posting

Interrogative form

Simple form	V-ing form
could I cross-post? could you cross-post? could he cross-post? could we cross-post? could you cross-post? could they cross-post?	could I be cross-posting? could you be cross-posting? could he be cross-posting? could we be cross-posting? could you be cross-posting? could they be cross-posting?
Perfect	V-ing perfect
could I have cross-posted? could you have cross-posted? could he have cross-posted? could we have cross-posted? could you have cross-posted? could they have cross-posted?	could I have been cross-posting? could you have been cross-posting? could he have been cross-posting? could we have been cross-posting? could you have been cross-posting? could they have been cross-posting?

Interro-negative form

Simple form	V-ing form
couldn't I cross-post? couldn't you cross-post? couldn't he cross-post? couldn't we cross-post? couldn't you cross-post? couldn't they cross-post?	couldn't I be cross-posting? couldn't you be cross-posting? couldn't he be cross-posting? couldn't we be cross-posting? couldn't you be cross-posting? couldn't they be cross-posting?
Perfect	V-ing perfect
couldn't I have cross-posted? couldn't you have cross-posted? couldn't he have cross-posted? couldn't we have cross-posted? couldn't you have cross-posted? couldn't they have cross-posted?	couldn't I have been cross-posting? couldn't you have been cross-posting? couldn't he have been cross-posting? couldn't we have been cross-posting? couldn't you have been cross-posting? couldn't they have been cross-posting?