Repeat unit AGC/GCT repeats 15 times in the reference sequence.
...AAAGTGTGAAGGTAGCGAACATGATGAATGGTGAGCAGGCCTTACCTAGATCACTCCCAAGTGCTCCTGAACTGGTGGCTGGCCTTTCACATGGATGTGA
ACTCTGTCCTGATAGGTCCCCCTGCTGCTGCTGCTGCTGCTGCTGTTGCTGCTTTTGCTGCTGTCTGAAACATTCAAAAGTGAAGTATATTTAAAAAACA
AAACTTAAAAGAATAAATACACCATGAGAAAAACTATTCATAAGGAAAATACATTGTTTCACGAATCAAAGTAGTCACTGGTAT...