C1111233133313231133133313231333132313331313231323132313223311211   >>    C111123313331323113313331323133313231333131323132313231322331121   <<    C1111233133313231133133313231333132313331313231323132313223311213   >>      C1111233133313231133133313231333132313331313231323132313223311212   >>