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Warning: Trying to access array offset on value of type bool in /home/kkwave/jinseiprogram.com/public_html/wp-content/themes/simplicity2/header-twitter-card.php on line 45 最近の若者「キーボードは1秒1文字、フリック入力なら1秒で3文字、フリック入力の方が速い」