C222133313331333131123313231333133313331333132312111112111113232212111   >>    C22213331333133313112331323133313331333133313231211111211111323221211   <<    C222133313331333131123313231333133313331333132312111112111113232212113   >>      C222133313331333131123313231333133313331333132312111112111113232212112   >>