I must perish you must perish he must perish we must perish you must perish they must perish
Forma com V-ing
I must be perishing you must be perishing he must be perishing we must be perishing you must be perishing they must be perishing
Perfeito
I must have perished you must have perished he must have perished we must have perished you must have perished they must have perished
Perfeito com V-ing
I must have been perishing you must have been perishing he must have been perishing we must have been perishing you must have been perishing they must have been perishing
Negação
Forma simple
I must not perish you must not perish he must not perish we must not perish you must not perish they must not perish
Forma com V-ing
I must not be perishing you must not be perishing he must not be perishing we must not be perishing you must not be perishing they must not be perishing
Perfeito
I must not have perished you must not have perished he must not have perished we must not have perished you must not have perished they must not have perished
Perfeito com V-ing
I must not have been perishing you must not have been perishing he must not have been perishing we must not have been perishing you must not have been perishing they must not have been perishing
Forma interrogativa
Forma simple
must I perish? must you perish? must he perish? must we perish? must you perish? must they perish?
Forma com V-ing
must I be perishing? must you be perishing? must he be perishing? must we be perishing? must you be perishing? must they be perishing?
Perfeito
must I have perished? must you have perished? must he have perished? must we have perished? must you have perished? must they have perished?
Perfeito com V-ing
must I have been perishing? must you have been perishing? must he have been perishing? must we have been perishing? must you have been perishing? must they have been perishing?
Forma interro-Negação
Forma simple
must I not perish? must you not perish? must he not perish? must we not perish? must you not perish? must they not perish?
Forma com V-ing
must I not be perishing? must you not be perishing? must he not be perishing? must we not be perishing? must you not be perishing? must they not be perishing?
Perfeito
must I not have perished? must you not have perished? must he not have perished? must we not have perished? must you not have perished? must they not have perished?
Perfeito com V-ing
must I not have been perishing? must you not have been perishing? must he not have been perishing? must we not have been perishing? must you not have been perishing? must they not have been perishing?