C111123313331323113313331333133313331323112133313331333131213113121   >>    C11112331333132311331333133313331333132311213331333133313121311312   <<    C111123313331323113313331333133313331323112133313331333131213113123   >>      C111123313331323113313331333133313331323112133313331333131213113122   >>