must seat
Verbo regular: seat - seated- seated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must seat
you must seat
she must seat
we must seat
you must seat
they must seat 	I must be seating
you must be seating
she must be seating
we must be seating
you must be seating
they must be seating	I must have seated
you must have seated
she 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
she must have been seating
we must have been seating
you must have been seating
they must have been seating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not seat
you must not seat
she 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
she must not be seating
we must not be seating
you must not be seating
they must not be seating	I must not have seated
you must not have seated
she 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
she must not have been seating
we must not have been seating
you must not have been seating
they must not have been seating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I seat?
must you seat?
must she seat?
must we seat?
must you seat?
must they seat? 	must I be seating?
must you be seating?
must she be seating?
must we be seating?
must you be seating?
must they be seating? 	must I have seated?
must you have seated?
must she 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 she have been seating?
must we have been seating?
must you have been seating?
must they have been seating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not seat?
must you not seat?
must she 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 she not be seating?
must we not be seating?
must you not be seating?
must they not be seating? 	must I not have seated?
must you not have seated?
must she 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 she not have been seating?
must we not have been seating?
must you not have been seating?
must they not have been seating?