English verb conjugation
MUST PREINSERT

Regular verb: preinsert - preinserted - preinserted

Affirmation

Simple form	V-ing form
I must preinsert you must preinsert she must preinsert we must preinsert you must preinsert they must preinsert	I must be preinserting you must be preinserting she 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 she 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 she 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 she 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 she 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 she 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 she 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 she preinsert? must we preinsert? must you preinsert? must they preinsert?	must I be preinserting? must you be preinserting? must she 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 she 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 she 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 she 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 she 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 she 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 she not have been preinserting? must we not have been preinserting? must you not have been preinserting? must they not have been preinserting?