C111123313331323113313331333133313331323133113313231333133313231212231   >>    C11112331333132311331333133313331333132313311331323133313331323121223   <<    C111123313331323113313331333133313331323133113313231333133313231212233   >>      C111123313331323113313331333133313331323133113313231333133313231212232   >>