English verb conjugation
MUST STARCH

Regular verb: starch - starched - starched

Affirmation

Simple form	V-ing form
I must starch you must starch he must starch we must starch you must starch they must starch	I must be starching you must be starching he must be starching we must be starching you must be starching they must be starching
Perfect	V-ing perfect
I must have starched you must have starched he must have starched we must have starched you must have starched they must have starched	I must have been starching you must have been starching he must have been starching we must have been starching you must have been starching they must have been starching

Negation

Simple form	V-ing form
I mustn't starch you mustn't starch he mustn't starch we mustn't starch you mustn't starch they mustn't starch	I mustn't be starching you mustn't be starching he mustn't be starching we mustn't be starching you mustn't be starching they mustn't be starching
Perfect	V-ing perfect
I mustn't have starched you mustn't have starched he mustn't have starched we mustn't have starched you mustn't have starched they mustn't have starched	I mustn't have been starching you mustn't have been starching he mustn't have been starching we mustn't have been starching you mustn't have been starching they mustn't have been starching

Interrogative form

Simple form	V-ing form
must I starch? must you starch? must he starch? must we starch? must you starch? must they starch?	must I be starching? must you be starching? must he be starching? must we be starching? must you be starching? must they be starching?
Perfect	V-ing perfect
must I have starched? must you have starched? must he have starched? must we have starched? must you have starched? must they have starched?	must I have been starching? must you have been starching? must he have been starching? must we have been starching? must you have been starching? must they have been starching?

Interro-negative form

Simple form	V-ing form
mustn't I starch? mustn't you starch? mustn't he starch? mustn't we starch? mustn't you starch? mustn't they starch?	mustn't I be starching? mustn't you be starching? mustn't he be starching? mustn't we be starching? mustn't you be starching? mustn't they be starching?
Perfect	V-ing perfect
mustn't I have starched? mustn't you have starched? mustn't he have starched? mustn't we have starched? mustn't you have starched? mustn't they have starched?	mustn't I have been starching? mustn't you have been starching? mustn't he have been starching? mustn't we have been starching? mustn't you have been starching? mustn't they have been starching?