C111123313331323113313331333133313231323133312111112111111312233121   >>    C11112331333132311331333133313331323132313331211111211111131223312   <<    C111123313331323113313331333133313231323133312111112111111312233123   >>      C111123313331323113313331333133313231323133312111112111111312233122   >>