English verb conjugation
COULD SLOUCH

Regular verb: slouch - slouched - slouched

Affirmation

Simple form	V-ing form
I could slouch you could slouch he could slouch we could slouch you could slouch they could slouch	I could be slouching you could be slouching he could be slouching we could be slouching you could be slouching they could be slouching
Perfect	V-ing perfect
I could have slouched you could have slouched he could have slouched we could have slouched you could have slouched they could have slouched	I could have been slouching you could have been slouching he could have been slouching we could have been slouching you could have been slouching they could have been slouching

Negation

Simple form	V-ing form
I could not slouch you could not slouch he could not slouch we could not slouch you could not slouch they could not slouch	I could not be slouching you could not be slouching he could not be slouching we could not be slouching you could not be slouching they could not be slouching
Perfect	V-ing perfect
I could not have slouched you could not have slouched he could not have slouched we could not have slouched you could not have slouched they could not have slouched	I could not have been slouching you could not have been slouching he could not have been slouching we could not have been slouching you could not have been slouching they could not have been slouching

Interrogative form

Simple form	V-ing form
could I slouch? could you slouch? could he slouch? could we slouch? could you slouch? could they slouch?	could I be slouching? could you be slouching? could he be slouching? could we be slouching? could you be slouching? could they be slouching?
Perfect	V-ing perfect
could I have slouched? could you have slouched? could he have slouched? could we have slouched? could you have slouched? could they have slouched?	could I have been slouching? could you have been slouching? could he have been slouching? could we have been slouching? could you have been slouching? could they have been slouching?

Interro-negative form

Simple form	V-ing form
could I not slouch? could you not slouch? could he not slouch? could we not slouch? could you not slouch? could they not slouch?	could I not be slouching? could you not be slouching? could he not be slouching? could we not be slouching? could you not be slouching? could they not be slouching?
Perfect	V-ing perfect
could I not have slouched? could you not have slouched? could he not have slouched? could we not have slouched? could you not have slouched? could they not have slouched?	could I not have been slouching? could you not have been slouching? could he not have been slouching? could we not have been slouching? could you not have been slouching? could they not have been slouching?