virtual inheritance
仮想継承
/suto3/google.iconvirtual inheritance
/suto3/Google画像検索.iconvirtual inheritance
/suto3/Google定義検索.icon virtual inheritance
/suto3/wikipedia.iconvirtual inheritance
/suto3/weblio.icon virtual inheritance
/suto3/kotobank.icon virtual inheritance
/suto3/jisho.icon virtual inheritance