C111123313331323113313331333133313331323132311233132322133311331   >>    C11112331333132311331333133313331333132313231123313232213331133   <<    C111123313331323113313331333133313331323132311233132322133311333   >>      C111123313331323113313331333133313331323132311233132322133311332   >>