thresh P-value %words %seq Nwords Nseq total_words total_seq 7.9552 1.0e-05 10.5% 11.8% 2 2 19 17 7.1222 5.0e-05 21.1% 23.5% 4 4 19 17 6.7035 0.0001 26.3% 29.4% 5 5 19 17 5.5438 0.0005 47.4% 52.9% 9 9 19 17 4.9593 0.001 78.9% 64.7% 15 11 19 17