thresh P-value %words %seq Nwords Nseq total_words total_seq 8.6568 1.0e-05 10.3% 9.1% 4 4 39 44 7.7562 5.0e-05 30.8% 27.3% 12 12 39 44 7.2426 0.0001 51.3% 45.5% 20 20 39 44 5.7652 0.0005 89.7% 79.5% 35 35 39 44 4.9968 0.001 94.9% 84.1% 37 37 39 44