C222133313331333131123313231333133313331313113313331333132213311231223121   >>    C22213331333133313112331323133313331333131311331333133313221331123122312   <<    C222133313331333131123313231333133313331313113313331333132213311231223123   >>      C222133313331333131123313231333133313331313113313331333132213311231223122   >>