C2221333133313331311233132313331333133313331322231333132313331333131222121   >>    C222133313331333131123313231333133313331333132223133313231333133313122212   <<    C2221333133313331311233132313331333133313331322231333132313331333131222123   >>      C2221333133313331311233132313331333133313331322231333132313331333131222122   >>