must mar
Verbo regular: mar - marred- marred

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must mar
you must mar
he must mar
we must mar
you must mar
they must mar 	I must be marring
you must be marring
he must be marring
we must be marring
you must be marring
they must be marring	I must have marred
you must have marred
he must have marred
we must have marred
you must have marred
they must have marred	I must have been marring
you must have been marring
he must have been marring
we must have been marring
you must have been marring
they must have been marring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not mar
you must not mar
he must not mar
we must not mar
you must not mar
they must not mar 	I must not be marring
you must not be marring
he must not be marring
we must not be marring
you must not be marring
they must not be marring	I must not have marred
you must not have marred
he must not have marred
we must not have marred
you must not have marred
they must not have marred	I must not have been marring
you must not have been marring
he must not have been marring
we must not have been marring
you must not have been marring
they must not have been marring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I mar?
must you mar?
must he mar?
must we mar?
must you mar?
must they mar? 	must I be marring?
must you be marring?
must he be marring?
must we be marring?
must you be marring?
must they be marring? 	must I have marred?
must you have marred?
must he have marred?
must we have marred?
must you have marred?
must they have marred? 	must I have been marring?
must you have been marring?
must he have been marring?
must we have been marring?
must you have been marring?
must they have been marring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not mar?
must you not mar?
must he not mar?
must we not mar?
must you not mar?
must they not mar? 	must I not be marring?
must you not be marring?
must he not be marring?
must we not be marring?
must you not be marring?
must they not be marring? 	must I not have marred?
must you not have marred?
must he not have marred?
must we not have marred?
must you not have marred?
must they not have marred? 	must I not have been marring?
must you not have been marring?
must he not have been marring?
must we not have been marring?
must you not have been marring?
must they not have been marring?