(answers)

ἀκούει

  • stem is ἀκου (don't worry about the accent, but do include the breathing mark)
  • personal ending is ει
  • lexical form is ἀκούω
  • meaning of inflected form is "he/she/it hears"

ἀκούουσι

  • stem is ἀκου
  • personal ending is ουσι
  • lexical form is ἀκούω
  • meaning of inflected form is "they hear"