create alias dvd (123) -> optical_disc (0)
create alias hd-dvd (0) -> optical_disc (0)
create alias hd_dvd (0) -> optical_disc (0)
create alias blu-ray (10) -> optical_disc (0)
create alias bluray (0) -> optical_disc (0)
create alias blu_ray (0) -> optical_disc (0)
create alias cbhd (0) -> optical_disc (0)
create alias china_blue_high-definition_disc (0) -> optical_disc (0)
create alias china_blue_high_definition_disc (0) -> optical_disc (0)
create alias hvd (0) -> optical_disc (0)
create alias holographic_versatile_disc (0) -> optical_disc (0)
create alias m-disc (0) -> optical_disc (0)
create alias millennial_disc (0) -> optical_disc (0)
create alias m_disc (0) -> optical_disc (0)