I think all of you would know the FLAMES game played by school students and teenagers. Using this game, they predict the relationship between two persons. F-Friends L-Love A-Affection M-Marriage E-Enemies S-Siblings Fist, you should take the two names: ABCD DEFA The common letters are stroked off(Shown in bold here). Then the remaining letters are counted. Here it is 4. Now, the calculation is done as follows FLAMES FLA ES F A ES A ES ES S So, the relationship is Siblings. Till counting the number of remaining letters, it is easy. But to get the relationship, the logic is a little complicated. Lets work it out here.