C313331311233133313112331333132313331323132322331333133313231311   >>    C31333131123313331311233133313231333132313232233133313331323131   <<    C313331311233133313112331333132313331323132322331333133313231313   >>      C313331311233133313112331333132313331323132322331333133313231312   >>