Comparative Zipf-like analysis for unigrams. Distribution of amino acid n-grams with n = 1 in Brucella suis 1330 in comparison with the distribution of the corresponding amino acids in other organisms is shown. The unigrams on the x-axis are arranged according to their rank in B. Suis 1330. Percentage count of n-grams of Brucella suis 1330 are plotted in bold magenta line. Corresponding frequencies of unigrams in the other animal pathogens are shown in thin red and plant pathogen in thin blue lines.