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 mustn't leaf you mustn't leaf he mustn't leaf we mustn't leaf you mustn't leaf they mustn't leaf	I mustn't be leafing you mustn't be leafing he mustn't be leafing we mustn't be leafing you mustn't be leafing they mustn't be leafing
Perfect	V-ing perfect
I mustn't have leafed you mustn't have leafed he mustn't have leafed we mustn't have leafed you mustn't have leafed they mustn't have leafed	I mustn't have been leafing you mustn't have been leafing he mustn't have been leafing we mustn't have been leafing you mustn't have been leafing they mustn't 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
mustn't I leaf? mustn't you leaf? mustn't he leaf? mustn't we leaf? mustn't you leaf? mustn't they leaf?	mustn't I be leafing? mustn't you be leafing? mustn't he be leafing? mustn't we be leafing? mustn't you be leafing? mustn't they be leafing?
Perfect	V-ing perfect
mustn't I have leafed? mustn't you have leafed? mustn't he have leafed? mustn't we have leafed? mustn't you have leafed? mustn't they have leafed?	mustn't I have been leafing? mustn't you have been leafing? mustn't he have been leafing? mustn't we have been leafing? mustn't you have been leafing? mustn't they have been leafing?