must stress
Verbo regular: stress - stressed- stressed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must stress
you must stress
he must stress
we must stress
you must stress
they must stress 	I must be stressing
you must be stressing
he must be stressing
we must be stressing
you must be stressing
they must be stressing	I must have stressed
you must have stressed
he must have stressed
we must have stressed
you must have stressed
they must have stressed	I must have been stressing
you must have been stressing
he must have been stressing
we must have been stressing
you must have been stressing
they must have been stressing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not stress
you must not stress
he must not stress
we must not stress
you must not stress
they must not stress 	I must not be stressing
you must not be stressing
he must not be stressing
we must not be stressing
you must not be stressing
they must not be stressing	I must not have stressed
you must not have stressed
he must not have stressed
we must not have stressed
you must not have stressed
they must not have stressed	I must not have been stressing
you must not have been stressing
he must not have been stressing
we must not have been stressing
you must not have been stressing
they must not have been stressing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I stress?
must you stress?
must he stress?
must we stress?
must you stress?
must they stress? 	must I be stressing?
must you be stressing?
must he be stressing?
must we be stressing?
must you be stressing?
must they be stressing? 	must I have stressed?
must you have stressed?
must he have stressed?
must we have stressed?
must you have stressed?
must they have stressed? 	must I have been stressing?
must you have been stressing?
must he have been stressing?
must we have been stressing?
must you have been stressing?
must they have been stressing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not stress?
must you not stress?
must he not stress?
must we not stress?
must you not stress?
must they not stress? 	must I not be stressing?
must you not be stressing?
must he not be stressing?
must we not be stressing?
must you not be stressing?
must they not be stressing? 	must I not have stressed?
must you not have stressed?
must he not have stressed?
must we not have stressed?
must you not have stressed?
must they not have stressed? 	must I not have been stressing?
must you not have been stressing?
must he not have been stressing?
must we not have been stressing?
must you not have been stressing?
must they not have been stressing?