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 must not engraft you must not engraft he must not engraft we must not engraft you must not engraft they must not engraft	I must not be engrafting you must not be engrafting he must not be engrafting we must not be engrafting you must not be engrafting they must not be engrafting
Perfect	V-ing perfect
I must not have engrafted you must not have engrafted he must not have engrafted we must not have engrafted you must not have engrafted they must not have engrafted	I must not have been engrafting you must not have been engrafting he must not have been engrafting we must not have been engrafting you must not have been engrafting they must not 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
must I not engraft? must you not engraft? must he not engraft? must we not engraft? must you not engraft? must they not engraft?	must I not be engrafting? must you not be engrafting? must he not be engrafting? must we not be engrafting? must you not be engrafting? must they not be engrafting?
Perfect	V-ing perfect
must I not have engrafted? must you not have engrafted? must he not have engrafted? must we not have engrafted? must you not have engrafted? must they not have engrafted?	must I not have been engrafting? must you not have been engrafting? must he not have been engrafting? must we not have been engrafting? must you not have been engrafting? must they not have been engrafting?