素朴な疑問だな
http://www15.big.or.jp/~t98907/unmei/R3_temp/R3_temp.swf?inputStr=%83E%83%93%83%7C%81E%83%8D%83R%83%8D%83R%81H%83E%83%93%83R%81E%83%7C%83%8D%83%7C%83%8D%81H%82%C7%82%C1%82%BF%81H