English verb conjugation
CAN STITCH

Regular verb: stitch - stitched - stitched

Affirmation

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

Interrogative form

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