English verb conjugation
MUST STITCH

Regular verb: stitch - stitched - stitched

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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