thresh P-value %words %seq Nwords Nseq total_words total_seq 9.3261 1.0e-05 25.0% 24.1% 7 7 28 29 8.1489 5.0e-05 46.4% 44.8% 13 13 28 29 7.5744 0.0001 53.6% 51.7% 15 15 28 29 6.0733 0.0005 71.4% 69.0% 20 20 28 29 5.3424 0.001 85.7% 82.8% 24 24 28 29