C2221333133313331311233132313331333133313331321123231313232213131   >>    C222133313331333131123313231333133313331333132112323131323221313   <<    C2221333133313331311233132313331333133313331321123231313232213133   >>      C2221333133313331311233132313331333133313331321123231313232213132   >>