失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤失誤