thresh P-value %words %seq Nwords Nseq total_words total_seq 7.1947 1.0e-05 15.2% 15.4% 10 10 66 65 6.4956 5.0e-05 30.3% 30.8% 20 20 66 65 6.1647 0.0001 31.8% 32.3% 21 21 66 65 4.9589 0.0005 45.5% 46.2% 30 30 66 65 4.3172 0.001 59.1% 60.0% 39 39 66 65