C111123313331323113313331333133313331323132311233133313222313232311   >>    C11112331333132311331333133313331333132313231123313331322231323231   <<    C111123313331323113313331333133313331323132311233133313222313232313   >>      C111123313331323113313331333133313331323132311233133313222313232312   >>