C111123313331323113313331333133313331323132333133313331323133313113313121   >>    C11112331333132311331333133313331333132313233313331333132313331311331312   <<    C111123313331323113313331333133313331323132333133313331323133313113313123   >>      C111123313331323113313331333133313331323132333133313331323133313113313122   >>