I may stitch you may stitch he may stitch we may stitch you may stitch they may stitch
V-ing form
I may be stitching you may be stitching he may be stitching we may be stitching you may be stitching they may be stitching
Perfect
I may have stitched you may have stitched he may have stitched we may have stitched you may have stitched they may have stitched
V-ing perfect
I may have been stitching you may have been stitching he may have been stitching we may have been stitching you may have been stitching they may have been stitching
Negation
Simple form
I may not stitch you may not stitch he may not stitch we may not stitch you may not stitch they may not stitch
V-ing form
I may not be stitching you may not be stitching he may not be stitching we may not be stitching you may not be stitching they may not be stitching
Perfect
I may not have stitched you may not have stitched he may not have stitched we may not have stitched you may not have stitched they may not have stitched
V-ing perfect
I may not have been stitching you may not have been stitching he may not have been stitching we may not have been stitching you may not have been stitching they may not have been stitching
Interrogative form
Simple form
may I stitch? may you stitch? may he stitch? may we stitch? may you stitch? may they stitch?
V-ing form
may I be stitching? may you be stitching? may he be stitching? may we be stitching? may you be stitching? may they be stitching?
Perfect
may I have stitched? may you have stitched? may he have stitched? may we have stitched? may you have stitched? may they have stitched?
V-ing perfect
may I have been stitching? may you have been stitching? may he have been stitching? may we have been stitching? may you have been stitching? may they have been stitching?
Interro-negative form
Simple form
may I not stitch? may you not stitch? may he not stitch? may we not stitch? may you not stitch? may they not stitch?
V-ing form
may I not be stitching? may you not be stitching? may he not be stitching? may we not be stitching? may you not be stitching? may they not be stitching?
Perfect
may I not have stitched? may you not have stitched? may he not have stitched? may we not have stitched? may you not have stitched? may they not have stitched?
V-ing perfect
may I not have been stitching? may you not have been stitching? may he not have been stitching? may we not have been stitching? may you not have been stitching? may they not have been stitching?