could cross-stitch
Regular verb: cross-stitch - cross-stitched- cross-stitched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cross-stitch
you could cross-stitch
he could cross-stitch
we could cross-stitch
you could cross-stitch
they could cross-stitch 	I could be cross-stitching
you could be cross-stitching
he could be cross-stitching
we could be cross-stitching
you could be cross-stitching
they could be cross-stitching	I could have cross-stitched
you could have cross-stitched
he could have cross-stitched
we could have cross-stitched
you could have cross-stitched
they could have cross-stitched	I could have been cross-stitching
you could have been cross-stitching
he could have been cross-stitching
we could have been cross-stitching
you could have been cross-stitching
they could have been cross-stitching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't cross-stitch
you couldn't cross-stitch
he couldn't cross-stitch
we couldn't cross-stitch
you couldn't cross-stitch
they couldn't cross-stitch 	I couldn't be cross-stitching
you couldn't be cross-stitching
he couldn't be cross-stitching
we couldn't be cross-stitching
you couldn't be cross-stitching
they couldn't be cross-stitching	I couldn't have cross-stitched
you couldn't have cross-stitched
he couldn't have cross-stitched
we couldn't have cross-stitched
you couldn't have cross-stitched
they couldn't have cross-stitched	I couldn't have been cross-stitching
you couldn't have been cross-stitching
he couldn't have been cross-stitching
we couldn't have been cross-stitching
you couldn't have been cross-stitching
they couldn't have been cross-stitching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cross-stitch?
could you cross-stitch?
could he cross-stitch?
could we cross-stitch?
could you cross-stitch?
could they cross-stitch? 	could I be cross-stitching?
could you be cross-stitching?
could he be cross-stitching?
could we be cross-stitching?
could you be cross-stitching?
could they be cross-stitching? 	could I have cross-stitched?
could you have cross-stitched?
could he have cross-stitched?
could we have cross-stitched?
could you have cross-stitched?
could they have cross-stitched? 	could I have been cross-stitching?
could you have been cross-stitching?
could he have been cross-stitching?
could we have been cross-stitching?
could you have been cross-stitching?
could they have been cross-stitching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I cross-stitch?
couldn't you cross-stitch?
couldn't he cross-stitch?
couldn't we cross-stitch?
couldn't you cross-stitch?
couldn't they cross-stitch? 	couldn't I be cross-stitching?
couldn't you be cross-stitching?
couldn't he be cross-stitching?
couldn't we be cross-stitching?
couldn't you be cross-stitching?
couldn't they be cross-stitching? 	couldn't I have cross-stitched?
couldn't you have cross-stitched?
couldn't he have cross-stitched?
couldn't we have cross-stitched?
couldn't you have cross-stitched?
couldn't they have cross-stitched? 	couldn't I have been cross-stitching?
couldn't you have been cross-stitching?
couldn't he have been cross-stitching?
couldn't we have been cross-stitching?
couldn't you have been cross-stitching?
couldn't they have been cross-stitching?