C2221333133313331311233132313331333133313331311233133313311221231231   >>    C222133313331333131123313231333133313331333131123313331331122123123   <<    C2221333133313331311233132313331333133313331311233133313311221231233   >>      C2221333133313331311233132313331333133313331311233133313311221231232   >>