D13231123313133313223313132233131323221323132313311232313331121   >>    D1323112331313331322331313223313132322132313231331123231333112   <<    D13231123313133313223313132233131323221323132313311232313331123   >>      D13231123313133313223313132233131323221323132313311232313331122   >>