A example of imbalanced hash table entires. A snapshot of the hash table. Some k-mers have very large location lists, while others have much shorter lists. For example, AAAAAAAAAAAA has over one million entries into reference genome whereas TGAACG-TAACAA has only 2.
Xin et al. BMC Genomics 2013 14(Suppl 1):S13 doi:10.1186/1471-2164-14-S1-S13