English verb conjugation
MUST PREINSERT

Regular verb: preinsert - preinserted - preinserted

Affirmation

Simple form	V-ing form
I must preinsert you must preinsert he must preinsert we must preinsert you must preinsert they must preinsert	I must be preinserting you must be preinserting he must be preinserting we must be preinserting you must be preinserting they must be preinserting
Perfect	V-ing perfect
I must have preinserted you must have preinserted he must have preinserted we must have preinserted you must have preinserted they must have preinserted	I must have been preinserting you must have been preinserting he must have been preinserting we must have been preinserting you must have been preinserting they must have been preinserting

Negation

Simple form	V-ing form
I must not preinsert you must not preinsert he must not preinsert we must not preinsert you must not preinsert they must not preinsert	I must not be preinserting you must not be preinserting he must not be preinserting we must not be preinserting you must not be preinserting they must not be preinserting
Perfect	V-ing perfect
I must not have preinserted you must not have preinserted he must not have preinserted we must not have preinserted you must not have preinserted they must not have preinserted	I must not have been preinserting you must not have been preinserting he must not have been preinserting we must not have been preinserting you must not have been preinserting they must not have been preinserting

Interrogative form

Simple form	V-ing form
must I preinsert? must you preinsert? must he preinsert? must we preinsert? must you preinsert? must they preinsert?	must I be preinserting? must you be preinserting? must he be preinserting? must we be preinserting? must you be preinserting? must they be preinserting?
Perfect	V-ing perfect
must I have preinserted? must you have preinserted? must he have preinserted? must we have preinserted? must you have preinserted? must they have preinserted?	must I have been preinserting? must you have been preinserting? must he have been preinserting? must we have been preinserting? must you have been preinserting? must they have been preinserting?

Interro-negative form

Simple form	V-ing form
must I not preinsert? must you not preinsert? must he not preinsert? must we not preinsert? must you not preinsert? must they not preinsert?	must I not be preinserting? must you not be preinserting? must he not be preinserting? must we not be preinserting? must you not be preinserting? must they not be preinserting?
Perfect	V-ing perfect
must I not have preinserted? must you not have preinserted? must he not have preinserted? must we not have preinserted? must you not have preinserted? must they not have preinserted?	must I not have been preinserting? must you not have been preinserting? must he not have been preinserting? must we not have been preinserting? must you not have been preinserting? must they not have been preinserting?