C111123313331323113313331333133313331323132311233133313232211322231   >>    C11112331333132311331333133313331333132313231123313331323221132223   <<    C111123313331323113313331333133313331323132311233133313232211322233   >>      C111123313331323113313331333133313331323132311233133313232211322232   >>