Help!

I am looking for software to help me spot tandem repeats in my DNA chunks (such as e.g. http://tandem.bu.edu/trf/trf.advanced.submit.html or http://archive.gramene.org/db/markers/ssrtool). However, all the existing tools focus on ACGT data, and my DNA data is in a form of amino acids, e.g.:

kneqineyknkyqknntyqseqncdikqyyekneqineykdkyqknntyqseqncdi ntldikqvtnqiedikseqnnvysnitenpffntdeyeinhsfnniheyndtdkneyikn nvdneeeesieknifdniiceklqnilnngiesfiqeiqfilehlkkki

I tried searching for existing software, but I failed. Would you happen to be able to help me find something that would work with such data format?