Repeat unit TG/CA repeats 4 times in the reference sequence.
...GGGCATGTGAGGGGTGTGTGTGAGGGGCGTGAGAGGGGCGTGTGAGAGGTTGCGTGTGAGGGGCGTGTGAGGGGCGTGTGTGAGAGGGGCGTGTGAGAGG
GACGTGTGAGAGGGCCACCTGTGTGTGAGGGGCGTGTGAGGTCGCGTGTGTGAGGGGCGTGTGAGAGGTCGCGTGTGAGAGGGCCGCGTGTGTGTGAGGG
GCGTGTGTGAGAGGGCCGCGTGTGTGTGAGGGGCGTGTGTGATAGGG...