English verb conjugation
MUST ENGRAFT

Regular verb: engraft - engrafted - engrafted

Affirmation

Simple form	V-ing form
I must engraft you must engraft he must engraft we must engraft you must engraft they must engraft	I must be engrafting you must be engrafting he must be engrafting we must be engrafting you must be engrafting they must be engrafting
Perfect	V-ing perfect
I must have engrafted you must have engrafted he must have engrafted we must have engrafted you must have engrafted they must have engrafted	I must have been engrafting you must have been engrafting he must have been engrafting we must have been engrafting you must have been engrafting they must have been engrafting

Negation

Simple form	V-ing form
I mustn't engraft you mustn't engraft he mustn't engraft we mustn't engraft you mustn't engraft they mustn't engraft	I mustn't be engrafting you mustn't be engrafting he mustn't be engrafting we mustn't be engrafting you mustn't be engrafting they mustn't be engrafting
Perfect	V-ing perfect
I mustn't have engrafted you mustn't have engrafted he mustn't have engrafted we mustn't have engrafted you mustn't have engrafted they mustn't have engrafted	I mustn't have been engrafting you mustn't have been engrafting he mustn't have been engrafting we mustn't have been engrafting you mustn't have been engrafting they mustn't have been engrafting

Interrogative form

Simple form	V-ing form
must I engraft? must you engraft? must he engraft? must we engraft? must you engraft? must they engraft?	must I be engrafting? must you be engrafting? must he be engrafting? must we be engrafting? must you be engrafting? must they be engrafting?
Perfect	V-ing perfect
must I have engrafted? must you have engrafted? must he have engrafted? must we have engrafted? must you have engrafted? must they have engrafted?	must I have been engrafting? must you have been engrafting? must he have been engrafting? must we have been engrafting? must you have been engrafting? must they have been engrafting?

Interro-negative form

Simple form	V-ing form
mustn't I engraft? mustn't you engraft? mustn't he engraft? mustn't we engraft? mustn't you engraft? mustn't they engraft?	mustn't I be engrafting? mustn't you be engrafting? mustn't he be engrafting? mustn't we be engrafting? mustn't you be engrafting? mustn't they be engrafting?
Perfect	V-ing perfect
mustn't I have engrafted? mustn't you have engrafted? mustn't he have engrafted? mustn't we have engrafted? mustn't you have engrafted? mustn't they have engrafted?	mustn't I have been engrafting? mustn't you have been engrafting? mustn't he have been engrafting? mustn't we have been engrafting? mustn't you have been engrafting? mustn't they have been engrafting?