C111123313331323113313331333133313331323132333133313311231211331313311   >>    C11112331333132311331333133313331333132313233313331331123121133131331   <<    C111123313331323113313331333133313331323132333133313311231211331313313   >>      C111123313331323113313331333133313331323132333133313311231211331313312   >>