C111123313331323113313331323133313331311331311331333133313311232121   >>    C11112331333132311331333132313331333131133131133133313331331123212   <<    C111123313331323113313331323133313331311331311331333133313311232123   >>      C111123313331323113313331323133313331311331311331333133313311232122   >>