English verb conjugation
MUST SEAT

Regular verb: seat - seated - seated

Affirmation

Simple form	V-ing form
I must seat you must seat he must seat we must seat you must seat they must seat	I must be seating you must be seating he must be seating we must be seating you must be seating they must be seating
Perfect	V-ing perfect
I must have seated you must have seated he must have seated we must have seated you must have seated they must have seated	I must have been seating you must have been seating he must have been seating we must have been seating you must have been seating they must have been seating

Negation

Simple form	V-ing form
I must not seat you must not seat he must not seat we must not seat you must not seat they must not seat	I must not be seating you must not be seating he must not be seating we must not be seating you must not be seating they must not be seating
Perfect	V-ing perfect
I must not have seated you must not have seated he must not have seated we must not have seated you must not have seated they must not have seated	I must not have been seating you must not have been seating he must not have been seating we must not have been seating you must not have been seating they must not have been seating

Interrogative form

Simple form	V-ing form
must I seat? must you seat? must he seat? must we seat? must you seat? must they seat?	must I be seating? must you be seating? must he be seating? must we be seating? must you be seating? must they be seating?
Perfect	V-ing perfect
must I have seated? must you have seated? must he have seated? must we have seated? must you have seated? must they have seated?	must I have been seating? must you have been seating? must he have been seating? must we have been seating? must you have been seating? must they have been seating?

Interro-negative form

Simple form	V-ing form
must I not seat? must you not seat? must he not seat? must we not seat? must you not seat? must they not seat?	must I not be seating? must you not be seating? must he not be seating? must we not be seating? must you not be seating? must they not be seating?
Perfect	V-ing perfect
must I not have seated? must you not have seated? must he not have seated? must we not have seated? must you not have seated? must they not have seated?	must I not have been seating? must you not have been seating? must he not have been seating? must we not have been seating? must you not have been seating? must they not have been seating?