I must seek you must seek she must seek we must seek you must seek they must seek
Forma com V-ing
I must be seeking you must be seeking she must be seeking we must be seeking you must be seeking they must be seeking
Perfeito
I must have sought you must have sought she must have sought we must have sought you must have sought they must have sought
Perfeito com V-ing
I must have been seeking you must have been seeking she must have been seeking we must have been seeking you must have been seeking they must have been seeking
Negação
Forma simple
I must not seek you must not seek she must not seek we must not seek you must not seek they must not seek
Forma com V-ing
I must not be seeking you must not be seeking she must not be seeking we must not be seeking you must not be seeking they must not be seeking
Perfeito
I must not have sought you must not have sought she must not have sought we must not have sought you must not have sought they must not have sought
Perfeito com V-ing
I must not have been seeking you must not have been seeking she must not have been seeking we must not have been seeking you must not have been seeking they must not have been seeking
Forma interrogativa
Forma simple
must I seek? must you seek? must she seek? must we seek? must you seek? must they seek?
Forma com V-ing
must I be seeking? must you be seeking? must she be seeking? must we be seeking? must you be seeking? must they be seeking?
Perfeito
must I have sought? must you have sought? must she have sought? must we have sought? must you have sought? must they have sought?
Perfeito com V-ing
must I have been seeking? must you have been seeking? must she have been seeking? must we have been seeking? must you have been seeking? must they have been seeking?
Forma interro-Negação
Forma simple
must I not seek? must you not seek? must she not seek? must we not seek? must you not seek? must they not seek?
Forma com V-ing
must I not be seeking? must you not be seeking? must she not be seeking? must we not be seeking? must you not be seeking? must they not be seeking?
Perfeito
must I not have sought? must you not have sought? must she not have sought? must we not have sought? must you not have sought? must they not have sought?
Perfeito com V-ing
must I not have been seeking? must you not have been seeking? must she not have been seeking? must we not have been seeking? must you not have been seeking? must they not have been seeking?