Repeat unit CCG/CGG repeats 15 times in the reference sequence.
...CCTCCAGTCGCGTCCACGGCGCCGGCCCCACCCTGCAGGATCGGCCGGATCCTCGCAGGCCCGCGACCCCCGAGGCCCCCGGAGCAGACACATCCTTCTC
GCAGAGGCCACTCACCTGCTCCGCCGCCGCCGCCGCCGCCGCCGCCGCCGCCGCTGCCTCCGCCTCCCCGTGCGCACCCGGCTCGGCCCTCCGCAAACTC
CAGACCGGGCCTCTCCCGCAGCGGCGCCTGGGGGGCGGGGCCGACGCCCGCGGCCGGCCAATCAGCGGCTGCCTCTCGGTGCTC...