thresh P-value %words %seq Nwords Nseq total_words total_seq 7.8046 1.0e-05 10.5% 11.8% 2 2 19 17 6.9696 5.0e-05 15.8% 17.6% 3 3 19 17 6.5425 0.0001 26.3% 29.4% 5 5 19 17 5.4157 0.0005 52.6% 58.8% 10 10 19 17 4.855 0.001 52.6% 58.8% 10 10 19 17