English verb conjugation
MUST LEAF

Regular verb: leaf - leafed - leafed

Affirmation

Simple form	V-ing form
I must leaf you must leaf he must leaf we must leaf you must leaf they must leaf	I must be leafing you must be leafing he must be leafing we must be leafing you must be leafing they must be leafing
Perfect	V-ing perfect
I must have leafed you must have leafed he must have leafed we must have leafed you must have leafed they must have leafed	I must have been leafing you must have been leafing he must have been leafing we must have been leafing you must have been leafing they must have been leafing

Negation

Simple form	V-ing form
I must not leaf you must not leaf he must not leaf we must not leaf you must not leaf they must not leaf	I must not be leafing you must not be leafing he must not be leafing we must not be leafing you must not be leafing they must not be leafing
Perfect	V-ing perfect
I must not have leafed you must not have leafed he must not have leafed we must not have leafed you must not have leafed they must not have leafed	I must not have been leafing you must not have been leafing he must not have been leafing we must not have been leafing you must not have been leafing they must not have been leafing

Interrogative form

Simple form	V-ing form
must I leaf? must you leaf? must he leaf? must we leaf? must you leaf? must they leaf?	must I be leafing? must you be leafing? must he be leafing? must we be leafing? must you be leafing? must they be leafing?
Perfect	V-ing perfect
must I have leafed? must you have leafed? must he have leafed? must we have leafed? must you have leafed? must they have leafed?	must I have been leafing? must you have been leafing? must he have been leafing? must we have been leafing? must you have been leafing? must they have been leafing?

Interro-negative form

Simple form	V-ing form
must I not leaf? must you not leaf? must he not leaf? must we not leaf? must you not leaf? must they not leaf?	must I not be leafing? must you not be leafing? must he not be leafing? must we not be leafing? must you not be leafing? must they not be leafing?
Perfect	V-ing perfect
must I not have leafed? must you not have leafed? must he not have leafed? must we not have leafed? must you not have leafed? must they not have leafed?	must I not have been leafing? must you not have been leafing? must he not have been leafing? must we not have been leafing? must you not have been leafing? must they not have been leafing?