English verb conjugation
MUST GREET

Regular verb: greet - greeted - greeted

Affirmation

Simple form	V-ing form
I must greet you must greet she must greet we must greet you must greet they must greet	I must be greeting you must be greeting she must be greeting we must be greeting you must be greeting they must be greeting
Perfect	V-ing perfect
I must have greeted you must have greeted she must have greeted we must have greeted you must have greeted they must have greeted	I must have been greeting you must have been greeting she must have been greeting we must have been greeting you must have been greeting they must have been greeting

Negation

Simple form	V-ing form
I must not greet you must not greet she must not greet we must not greet you must not greet they must not greet	I must not be greeting you must not be greeting she must not be greeting we must not be greeting you must not be greeting they must not be greeting
Perfect	V-ing perfect
I must not have greeted you must not have greeted she must not have greeted we must not have greeted you must not have greeted they must not have greeted	I must not have been greeting you must not have been greeting she must not have been greeting we must not have been greeting you must not have been greeting they must not have been greeting

Interrogative form

Simple form	V-ing form
must I greet? must you greet? must she greet? must we greet? must you greet? must they greet?	must I be greeting? must you be greeting? must she be greeting? must we be greeting? must you be greeting? must they be greeting?
Perfect	V-ing perfect
must I have greeted? must you have greeted? must she have greeted? must we have greeted? must you have greeted? must they have greeted?	must I have been greeting? must you have been greeting? must she have been greeting? must we have been greeting? must you have been greeting? must they have been greeting?

Interro-negative form

Simple form	V-ing form
must I not greet? must you not greet? must she not greet? must we not greet? must you not greet? must they not greet?	must I not be greeting? must you not be greeting? must she not be greeting? must we not be greeting? must you not be greeting? must they not be greeting?
Perfect	V-ing perfect
must I not have greeted? must you not have greeted? must she not have greeted? must we not have greeted? must you not have greeted? must they not have greeted?	must I not have been greeting? must you not have been greeting? must she not have been greeting? must we not have been greeting? must you not have been greeting? must they not have been greeting?