Repeat unit T/A repeats 21 times in the reference sequence.
...TGGAGTGCGGTGGCACAATCATAGCTCACTACAGCCTTGAACTCCTGGCTCAAGCCATCCTCCTGCCTCAGCCTCTTGAGTAGCTGGGACCCCAGGCATG
TGCCACCATGCCCAGCTAATTTTTTCTGTTTTTTTTTTTTGGTAGAGATGGGGTCTCACTATGTTGCCCAGGCTGATCTTGAACTCTTAGCCTCAAGTGA
TCCTCCTGCCTTAGCTTCTCAAAGGGTTGGGATTGCAGGCACGAGCCACCGCGCCTAGCT...