http://d.hatena.ne.jp/nanamibeya/20121119/p3
Some tentative episode counts for a couple Winter shows.
13 eps - Ore no Kanojo to Osananajimi ga Shuraba Sugiru
13 eps - Minami-ke Tadaima
12 eps - Maouyuu Maou Yuusha
12 eps - Amnesia
10 eps - Mondaiji-tachi ga Isekai kara Kuru Sou Desu yo?
All one cour so far.