English verb conjugation
CAN STITCH

Regular verb: stitch - stitched - stitched

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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