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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
static Map<S, BWImage> getLearnedCharacters2() {
  Set<S> md5s = requiredPhraseImageMD5s();

  new HashMap<S, BWImage> md5ToImage;
  int nFound = 0;
  for (S md5, File f : screenClipFiles()) {
    if (!md5s.contains(md5))
      continue; // with print("Skipping clip: " + md5);
    ++nFound;
      
    BWImage img = loadBWImage(f);
    //md5ToImage.put(md5, img);
    for (BWImage cImg : horizontalAutoSplitToImages(img)) {
      S cMD5 = ocrMD5OfBWImage(cImg);
      md5ToImage.put(cMD5, cImg);
    }
  }
  
  print("Loaded phrase images: " + nFound + "/" + l(md5s));
  ret md5ToImage;
}