Problem with LZW Decompression

I'm writing a LZW decompression in Matlab, i have a problem with decompressions long words. I'm seeing algorithm and sample code in Google, and dont know what I'm doing wrong, adding a source code.

In short words it's ok

Input Date:

cod = [3;1;2;2;1;4;6;1];

A = ['a','b','w']

Out:

(A,cod) ans = wabbawabba

In long words

Input

cod = [5;2;3;3;2;1;6;8;10;12;9;11;4;4;17];

A = ['#','a','b','o','d'];

Out

(A,cod) ans = dabba#dabba#dabbba#daoo#dao

Correct string --> dabba#dabba#dabba#doo#doo

Decompression LZW

function decod=LZWdecoder(A,cod)

L=length(A);                
codebook=cell(L,1);         
for j=1:L                   
    codebook{j}=A(j);
end
decod=cell(length(cod),1);
i=1;
k=1;

while i<=length(cod),       
loop=0;                     
search=codebook{cod(i)};              
    while loop == 0,
        index = search_cell(codebook,search);  
        if index~=0             
            decod{k}=codebook{cod(i)};
            i=i+1;          
            if i<=length(cod)  
                search=[search codebook{cod(i)}];
            else
                loop=1;         
            end
        else                    
            loop=1;             
            codebook{length(codebook)+1}=search;   
        end

      end
  k=k+1;    
  end
  decod=decod';
  decod=cell2mat(decod);

Searching

function j=search_cell(A,s)

j=0;

for i=1:length(A)                   
    if length(A{i})==length(s)      
        if eq(A{i}, s)                  
            j=i;
            return
        end
    end
end