thresh P-value %words %seq Nwords Nseq total_words total_seq 9.0549 1.0e-05 20.0% 20.0% 10 10 50 50 7.9789 5.0e-05 30.0% 30.0% 15 15 50 50 7.461 0.0001 30.0% 30.0% 15 15 50 50 6.1042 0.0005 36.0% 36.0% 18 18 50 50 5.4421 0.001 40.0% 40.0% 20 20 50 50