Repeat unit TTTA/TAAA repeats 4 times in the reference sequence.
...GTATTGCCCCTGCGCAGCTGCTGCTGGGCTAGCATCGCCCGGGTCTTTGGGACACTTTAAGTATCCGTTTAAACAATCGTAGAGGAGCCCGCGCAGTGCT
GCTGCATTCTGGCCACACTTTTATTTATTTATTCAAGCAAGAGGTATTTACTGGGGCCCGTGAGAACACATCTGTAGAGCCCGGGGGTGTCGGGCCTTGG
CAGGCAGCAGGAGTGCGGGGAGAGGAAGCCTTGCCGGGCTGCTCAGGTGCCTTTC...