C111123313331323113313331333133313331323132311233132322132313233121   >>    C11112331333132311331333133313331333132313231123313232213231323312   <<    C111123313331323113313331333133313331323132311233132322132313233123   >>      C111123313331323113313331333133313331323132311233132322132313233122   >>