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X1X11XX2XX1XXX20
1121X21221X21220
X121X1X2X212XX21
11X11212121X1121
2121XXX2X21XXX11
11X111122X111111
2121222212X22221
11X12112XX111120
X12122X22212X221
11212X1222111221
X12122X22XXXX121
