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