thresh P-value %words %seq Nwords Nseq total_words total_seq 8.2922 1.0e-05 5.4% 4.4% 2 2 37 45 7.4463 5.0e-05 18.9% 15.6% 7 7 37 45 7.025 0.0001 21.6% 17.8% 8 8 37 45 5.903 0.0005 45.9% 37.8% 17 17 37 45 5.3469 0.001 51.4% 42.2% 19 19 37 45