English verb conjugation
MUST STARCH

Regular verb: starch - starched - starched

Affirmation

Simple form	V-ing form
I must starch you must starch she must starch we must starch you must starch they must starch	I must be starching you must be starching she 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 she 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 she 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 she 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 she 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 she 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 she 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 she starch? must we starch? must you starch? must they starch?	must I be starching? must you be starching? must she 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 she 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 she 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 she 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 she 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 she 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 she have been starching? mustn't we have been starching? mustn't you have been starching? mustn't they have been starching?