In the march of the opening ceremony of the Olympic Games , I do not know this country . Where I wonder there ?
Country against the World Cup . I've never heard . Where it will be country ?
People who do not know the world is in the surprisingly often .

Names of the countries in the world , location , is an application to remember the national flag .
There is also additional information capital , currency , language , and population .

Separates the country you do not know the country that I know .
Country you do not know until remember , it will be questions .
Country that you know are not questions .

Is a little questions before I forget , in an iterative remembered and firmly established memory .
While become by storing all the achievement rate is 100%,
Achievement rate will decrease because you forget time has elapsed .
Will not be three months questions to answer to the first problem to be " know " .
It is on the final few minutes after the answer to the first question as " do not know " .
It is on the final one hour after the answer to the problem to be " know " .
And , it is on the final 24 hours after you answer to the problem to be " know " .
And , it is on the final two days after the answer to the problem to be " know " .
And , it is on the final four days after the answer to the problem to be " know " .
And , it is on the final six days after the answer to the problem to be " know " .
And , it is on the final eight days after the answer to the problem to be " know " .
And , it is on the final 10 days after the answer to the problem to be " know " .
And , it is on the final after 15 days to answer to the problem to be " know " .
And , it is on the final one month after the answer to the problem to be " know " .
And , it is on the final three months after the answer to the problem to be " know " .
If you answer " do not know " also the way it is from the beginning .
.....
And I am here to stay in memory all too soon .