1. Personal Pronouns
   1. number: singular (eg: I) or plural (eg: we)
   2. person: 1st person (eg: I), 2nd person (eg: you) or 3rd person (eg: he)
   3. gender: male (eg: he), female (eg: she) or neuter (eg: it)
   4. case: subject (eg: we) or object (eg: us)
2. Main Topic 2