English verb conjugation
COULD SLIP-STITCH

Regular verb: slip-stitch - slip-stitched - slip-stitched

Affirmation

Simple form	V-ing form
I could slip-stitch you could slip-stitch she could slip-stitch we could slip-stitch you could slip-stitch they could slip-stitch	I could be slip-stitching you could be slip-stitching she could be slip-stitching we could be slip-stitching you could be slip-stitching they could be slip-stitching
Perfect	V-ing perfect
I could have slip-stitched you could have slip-stitched she could have slip-stitched we could have slip-stitched you could have slip-stitched they could have slip-stitched	I could have been slip-stitching you could have been slip-stitching she could have been slip-stitching we could have been slip-stitching you could have been slip-stitching they could have been slip-stitching

Negation

Simple form	V-ing form
I could not slip-stitch you could not slip-stitch she could not slip-stitch we could not slip-stitch you could not slip-stitch they could not slip-stitch	I could not be slip-stitching you could not be slip-stitching she could not be slip-stitching we could not be slip-stitching you could not be slip-stitching they could not be slip-stitching
Perfect	V-ing perfect
I could not have slip-stitched you could not have slip-stitched she could not have slip-stitched we could not have slip-stitched you could not have slip-stitched they could not have slip-stitched	I could not have been slip-stitching you could not have been slip-stitching she could not have been slip-stitching we could not have been slip-stitching you could not have been slip-stitching they could not have been slip-stitching

Interrogative form

Simple form	V-ing form
could I slip-stitch? could you slip-stitch? could she slip-stitch? could we slip-stitch? could you slip-stitch? could they slip-stitch?	could I be slip-stitching? could you be slip-stitching? could she be slip-stitching? could we be slip-stitching? could you be slip-stitching? could they be slip-stitching?
Perfect	V-ing perfect
could I have slip-stitched? could you have slip-stitched? could she have slip-stitched? could we have slip-stitched? could you have slip-stitched? could they have slip-stitched?	could I have been slip-stitching? could you have been slip-stitching? could she have been slip-stitching? could we have been slip-stitching? could you have been slip-stitching? could they have been slip-stitching?

Interro-negative form

Simple form	V-ing form
could I not slip-stitch? could you not slip-stitch? could she not slip-stitch? could we not slip-stitch? could you not slip-stitch? could they not slip-stitch?	could I not be slip-stitching? could you not be slip-stitching? could she not be slip-stitching? could we not be slip-stitching? could you not be slip-stitching? could they not be slip-stitching?
Perfect	V-ing perfect
could I not have slip-stitched? could you not have slip-stitched? could she not have slip-stitched? could we not have slip-stitched? could you not have slip-stitched? could they not have slip-stitched?	could I not have been slip-stitching? could you not have been slip-stitching? could she not have been slip-stitching? could we not have been slip-stitching? could you not have been slip-stitching? could they not have been slip-stitching?