<prompt> Sacrotuberous ligament is not pierced byCoccygeal branch of Inferior gluteal nervePerforating cutaneous nervesPosterior cutaneous nerve of thighFilaments of Coccygeal plexus  <response>: Sacrotuberous ligament is pierced byCoccygeal branch of Inferior gluteal nervePerforating cutaneous nervesFilaments of Coccygeal plexus 