Repeat unit -GG/CC- repeats 11 times in the reference sequence.
...CTGGGGCGAGGGCGCAGCGGGCAGCGGGCGGCGGGCGCGGGCGCGGGCACGGGCGGCGGCGCGGGGTGTGCGGGCCCGGGGTCTGGGCGCCCGGCTCGGC
CCGGAGCTGCTCCCGAGTGGGCGGCGGCGGCGGCGGCGGCGGCGGCGGCAGCGGGGAGGGCGCGCGCGTGCGCAGGCCCGCGGCGCCTCCCAAGTTGGGA
TCCGAGTTGCGCTCAATGGAGCCGGGCCGGGCGCCTCGGGGCGGTGCGGGCCTGAGGGGCGGCAGAGCGCGGGG...