must leaf
Regular verb: leaf - leafed- leafed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must leaf
you must leaf
she must leaf
we must leaf
you must leaf
they must leaf 	I must be leafing
you must be leafing
she must be leafing
we must be leafing
you must be leafing
they must be leafing	I must have leafed
you must have leafed
she 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
she 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 	Perfect 	V-ing perfect 	
I mustn't leaf
you mustn't leaf
she 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
she mustn't be leafing
we mustn't be leafing
you mustn't be leafing
they mustn't be leafing	I mustn't have leafed
you mustn't have leafed
she 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
she 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 	Perfect 	V-ing perfect 	
must I leaf?
must you leaf?
must she leaf?
must we leaf?
must you leaf?
must they leaf? 	must I be leafing?
must you be leafing?
must she be leafing?
must we be leafing?
must you be leafing?
must they be leafing? 	must I have leafed?
must you have leafed?
must she 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 she 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 	Perfect 	V-ing perfect 	
mustn't I leaf?
mustn't you leaf?
mustn't she 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 she be leafing?
mustn't we be leafing?
mustn't you be leafing?
mustn't they be leafing? 	mustn't I have leafed?
mustn't you have leafed?
mustn't she 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 she have been leafing?
mustn't we have been leafing?
mustn't you have been leafing?
mustn't they have been leafing?