thresh P-value %words %seq Nwords Nseq total_words total_seq 7.5376 5.0e-05 12.1% 10.5% 4 4 33 38 7.4589 0.0001 24.2% 23.7% 8 9 33 38 5.8525 0.0005 75.8% 71.1% 25 27 33 38 4.7947 0.001 97.0% 84.2% 32 32 33 38