K562_2_RNA_filtered_counts.tsv.gz
 266776 GGGGGGGGGG
  10266 TGTTCACCGG
   3314 GGGGGGGGGC
   2956 CGGGGGGGGG
   2490 GGGGGGGGGT
   2450 GTGGGGGGGG
   2012 GGGGGGGGCG
   1925 CCCCCCCCCC
   1643 CCGCCCCCCC
   1528 GGGGGGGGTG