may machine-stitch
Regular verb: machine-stitch - machine-stitched- machine-stitched

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

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