C111123313331323113313331333133313331323132333133313331311221133121   >>    C11112331333132311331333133313331333132313233313331333131122113312   <<    C111123313331323113313331333133313331323132333133313331311221133123   >>      C111123313331323113313331333133313331323132333133313331311221133122   >>