C111123313331323113313331333133313331323133113313231333133313121331   >>    C11112331333132311331333133313331333132313311331323133313331312133   <<    C111123313331323113313331333133313331323133113313231333133313121333   >>      C111123313331323113313331333133313331323133113313231333133313121332   >>