ɪnðə tˈiːɪn tˈuː z θɹˈiː sˈʌbtaɪp, ðə tˈɛtɹɐɡənəlikoʊˈɔːɹdɪnˌeɪɾᵻd vˈeɪkənsiz ɑːɹ ɪn ɐn ˈɔːɹdɚd ɚɹˈeɪndʒmənt, wˈɛɹæz ðə vˈeɪkənsiz ɪn sˈiːɪn tˈuː z θɹˈiː ɑːɹ dɪsˈoːɹdɚd.
In the T-In2S3 subtype, the tetragonally-coordinated vacancies are in an ordered arrangement, whereas the vacancies in C-In2S3 are disordered.