I must collect you must collect he must collect we must collect you must collect they must collect
Forma com V-ing
I must be collecting you must be collecting he must be collecting we must be collecting you must be collecting they must be collecting
Perfeito
I must have collected you must have collected he must have collected we must have collected you must have collected they must have collected
Perfeito com V-ing
I must have been collecting you must have been collecting he must have been collecting we must have been collecting you must have been collecting they must have been collecting
Negação
Forma simple
I must not collect you must not collect he must not collect we must not collect you must not collect they must not collect
Forma com V-ing
I must not be collecting you must not be collecting he must not be collecting we must not be collecting you must not be collecting they must not be collecting
Perfeito
I must not have collected you must not have collected he must not have collected we must not have collected you must not have collected they must not have collected
Perfeito com V-ing
I must not have been collecting you must not have been collecting he must not have been collecting we must not have been collecting you must not have been collecting they must not have been collecting
Forma interrogativa
Forma simple
must I collect? must you collect? must he collect? must we collect? must you collect? must they collect?
Forma com V-ing
must I be collecting? must you be collecting? must he be collecting? must we be collecting? must you be collecting? must they be collecting?
Perfeito
must I have collected? must you have collected? must he have collected? must we have collected? must you have collected? must they have collected?
Perfeito com V-ing
must I have been collecting? must you have been collecting? must he have been collecting? must we have been collecting? must you have been collecting? must they have been collecting?
Forma interro-Negação
Forma simple
must I not collect? must you not collect? must he not collect? must we not collect? must you not collect? must they not collect?
Forma com V-ing
must I not be collecting? must you not be collecting? must he not be collecting? must we not be collecting? must you not be collecting? must they not be collecting?
Perfeito
must I not have collected? must you not have collected? must he not have collected? must we not have collected? must you not have collected? must they not have collected?
Perfeito com V-ing
must I not have been collecting? must you not have been collecting? must he not have been collecting? must we not have been collecting? must you not have been collecting? must they not have been collecting?