(objective first-person singular pronoun) used by the speaker to refer to themselves when they are the object of a sentence
私を, 私に
(objective first-person plural pronoun) used by the speaker to refer to themselves and at least one other person when they are the object of a sentence
私たちを, 私たちに
(objective third-person plural pronoun) used when referring to the aforementioned things or people that are the object of a sentence
彼らを
(objective third-person singular pronoun) used when referring to a male human or animal as the object of a sentence
彼を, 彼に
(objective third-person singular pronoun) used when referring to a female human or animal that is the object of a sentence
彼女を, 彼女は
(objective third-person singular pronoun) used when referring to something or an animal of unknown sex as the object of a sentence
それ, あれ