C222133313331333131123313231333133313331333132112323133312111112233123311   >>    C22213331333133313112331323133313331333133313211232313331211111223312331   <<    C222133313331333131123313231333133313331333132112323133312111112233123313   >>      C222133313331333131123313231333133313331333132112323133312111112233123312   >>