0001                   
                 1111                   
    01             11                   
   010111011011111  10   1010101        
          100111100111000101001         
      101001001111010010101111111100    
     10000111110011100000101011100101  
    1100001000010010101011010100101111  
    1010011011110111100100011000011011  
    1011100111010001101000101110111111  
    0111111011001100001100111110110001  
     010101000000111000101000101101111  
     00100010000001001011110100000101   
      1100100001111101011001111111101   
        100010010011101101100011100     
          001100111110111111101000       
            00110010100011011011       
                1100111100000           
                    (k)