C111123313331323113313331333133313331323132311233133313233313231333112211232331   >>    C11112331333132311331333133313331333132313231123313331323331323133311221123233   <<    C111123313331323113313331333133313331323132311233133313233313231333112211232333   >>      C111123313331323113313331333133313331323132311233133313233313231333112211232332   >>