Insufficient 3rd-particular person object pronouns, which can be replaced by their respective subject pronouns or omitted completely (eu vi ele or simply just eu vi in lieu of eu o vi for "I saw him/it") When you are crossing a land border and intend to return to Brazil (e.g. following https://clinicalkeynote.com/userinfo.php?from=space&action=view&userinfo=susie.fosbery-451692