C111123313331323113313331333133313331323132311233132333112311331   >>    C11112331333132311331333133313331333132313231123313233311231133   <<    C111123313331323113313331333133313331323132311233132333112311333   >>      C111123313331323113313331333133313331323132311233132333112311332   >>