Cuidado, este verbo pode não existir, a conjugação é dada como exemplo.
Afirmação
Forma simple
I must stay up you must stay up he must stay up we must stay up you must stay up they must stay up
Forma com V-ing
I must be stay uping you must be stay uping he must be stay uping we must be stay uping you must be stay uping they must be stay uping
Perfeito
I must have stay uped you must have stay uped he must have stay uped we must have stay uped you must have stay uped they must have stay uped
Perfeito com V-ing
I must have been stay uping you must have been stay uping he must have been stay uping we must have been stay uping you must have been stay uping they must have been stay uping
Negação
Forma simple
I must not stay up you must not stay up he must not stay up we must not stay up you must not stay up they must not stay up
Forma com V-ing
I must not be stay uping you must not be stay uping he must not be stay uping we must not be stay uping you must not be stay uping they must not be stay uping
Perfeito
I must not have stay uped you must not have stay uped he must not have stay uped we must not have stay uped you must not have stay uped they must not have stay uped
Perfeito com V-ing
I must not have been stay uping you must not have been stay uping he must not have been stay uping we must not have been stay uping you must not have been stay uping they must not have been stay uping
Forma interrogativa
Forma simple
must I stay up? must you stay up? must he stay up? must we stay up? must you stay up? must they stay up?
Forma com V-ing
must I be stay uping? must you be stay uping? must he be stay uping? must we be stay uping? must you be stay uping? must they be stay uping?
Perfeito
must I have stay uped? must you have stay uped? must he have stay uped? must we have stay uped? must you have stay uped? must they have stay uped?
Perfeito com V-ing
must I have been stay uping? must you have been stay uping? must he have been stay uping? must we have been stay uping? must you have been stay uping? must they have been stay uping?
Forma interro-Negação
Forma simple
must I not stay up? must you not stay up? must he not stay up? must we not stay up? must you not stay up? must they not stay up?
Forma com V-ing
must I not be stay uping? must you not be stay uping? must he not be stay uping? must we not be stay uping? must you not be stay uping? must they not be stay uping?
Perfeito
must I not have stay uped? must you not have stay uped? must he not have stay uped? must we not have stay uped? must you not have stay uped? must they not have stay uped?
Perfeito com V-ing
must I not have been stay uping? must you not have been stay uping? must he not have been stay uping? must we not have been stay uping? must you not have been stay uping? must they not have been stay uping?