He doesn't have any. You don't NEED two. Sasuke only had Amaterasu and his right eye can control it via Enton. With both Mangekyou you get Susano'o, which Madara, Itachi and Sasuke have. Itachi just so happened to have both Ama and Tsu. Sasuke clearly stated that you only need two Mangekyou to unlock Susano'o. Itachi even said it himself "on that fateful day along with Amaterasu and Tsukuyomi this is the third power I awakened". It applies to Itachi himself, not all Mangekyou users. It was an isolated case.