I must count you must count he must count we must count you must count they must count
Forma con V-ing
I must be counting you must be counting he must be counting we must be counting you must be counting they must be counting
Perfecto
I must have counted you must have counted he must have counted we must have counted you must have counted they must have counted
Perfecto con V-ing
I must have been counting you must have been counting he must have been counting we must have been counting you must have been counting they must have been counting
Negación
Forma simple
I must not count you must not count he must not count we must not count you must not count they must not count
Forma con V-ing
I must not be counting you must not be counting he must not be counting we must not be counting you must not be counting they must not be counting
Perfecto
I must not have counted you must not have counted he must not have counted we must not have counted you must not have counted they must not have counted
Perfecto con V-ing
I must not have been counting you must not have been counting he must not have been counting we must not have been counting you must not have been counting they must not have been counting
Forma interrogativa
Forma simple
must I count? must you count? must he count? must we count? must you count? must they count?
Forma con V-ing
must I be counting? must you be counting? must he be counting? must we be counting? must you be counting? must they be counting?
Perfecto
must I have counted? must you have counted? must he have counted? must we have counted? must you have counted? must they have counted?
Perfecto con V-ing
must I have been counting? must you have been counting? must he have been counting? must we have been counting? must you have been counting? must they have been counting?
Forma interro-negativa
Forma simple
must I not count? must you not count? must he not count? must we not count? must you not count? must they not count?
Forma con V-ing
must I not be counting? must you not be counting? must he not be counting? must we not be counting? must you not be counting? must they not be counting?
Perfecto
must I not have counted? must you not have counted? must he not have counted? must we not have counted? must you not have counted? must they not have counted?
Perfecto con V-ing
must I not have been counting? must you not have been counting? must he not have been counting? must we not have been counting? must you not have been counting? must they not have been counting?