English verb conjugation
MUST DARN

Regular verb: darn - darned - darned

Affirmation

Simple form	V-ing form
I must darn you must darn he must darn we must darn you must darn they must darn	I must be darning you must be darning he must be darning we must be darning you must be darning they must be darning
Perfect	V-ing perfect
I must have darned you must have darned he must have darned we must have darned you must have darned they must have darned	I must have been darning you must have been darning he must have been darning we must have been darning you must have been darning they must have been darning

Negation

Simple form	V-ing form
I must not darn you must not darn he must not darn we must not darn you must not darn they must not darn	I must not be darning you must not be darning he must not be darning we must not be darning you must not be darning they must not be darning
Perfect	V-ing perfect
I must not have darned you must not have darned he must not have darned we must not have darned you must not have darned they must not have darned	I must not have been darning you must not have been darning he must not have been darning we must not have been darning you must not have been darning they must not have been darning

Interrogative form

Simple form	V-ing form
must I darn? must you darn? must he darn? must we darn? must you darn? must they darn?	must I be darning? must you be darning? must he be darning? must we be darning? must you be darning? must they be darning?
Perfect	V-ing perfect
must I have darned? must you have darned? must he have darned? must we have darned? must you have darned? must they have darned?	must I have been darning? must you have been darning? must he have been darning? must we have been darning? must you have been darning? must they have been darning?

Interro-negative form

Simple form	V-ing form
must I not darn? must you not darn? must he not darn? must we not darn? must you not darn? must they not darn?	must I not be darning? must you not be darning? must he not be darning? must we not be darning? must you not be darning? must they not be darning?
Perfect	V-ing perfect
must I not have darned? must you not have darned? must he not have darned? must we not have darned? must you not have darned? must they not have darned?	must I not have been darning? must you not have been darning? must he not have been darning? must we not have been darning? must you not have been darning? must they not have been darning?