Repeat unit GT/AC repeats 4 times in the reference sequence.
...AGAATTCCTGTCTGTGATGTTTTGCTCCTCACTTCCCTGGTGACAGGATATTAGGCAAGCACAAAGAGTCAGCCCACTCCAAGGACCCCTGCCCCAGAGA
GAGTGAGTGTGCAAGTTGAGTGTGTGTGAGAGTTTCACACCTGGCTTACATGCAGAACGGGGCACTTGCCACATGGGGGGGAGTCTTGGATGTTGGGATT
CTTTGAGGGAGCCTCACATGGCCCCTGTCCTTCTGTCCTTGGCCCCA...