thresh P-value %words %seq Nwords Nseq total_words total_seq 8.413 1.0e-05 27.8% 22.7% 5 5 18 22 7.4502 5.0e-05 38.9% 31.8% 7 7 18 22 6.9612 0.0001 44.4% 36.4% 8 8 18 22 5.6463 0.0005 72.2% 59.1% 13 13 18 22 4.9958 0.001 83.3% 68.2% 15 15 18 22