C31333131123313331311233133313231333132313232233112211232311311   >>    C3133313112331333131123313331323133313231323223311221123231131   <<    C31333131123313331311233133313231333132313232233112211232311313   >>      C31333131123313331311233133313231333132313232233112211232311312   >>