Repeat unit GCC/GGC repeats 12 times in the reference sequence.
...CACCGCAAGGCTCAAGGCGCCGCCGGCGTGGACCGCGCACGGCCTCTAGGTCTCCTCGCCAGGACAGCAACCTCTCCCCTGGCCCTCATGGGCACCGTCA
GCTCCAGGCGGTCCTGGTGGCCGCTGCCACTGCTGCTGCTGCTGCTGCTGCTCCTGGGTCCCGCGGGCGCCCGTGCGCAGGAGGACGAGGACGGCGACTA
CGAGGAGCTGGTGCTAGCCTTGCGTTCCGAGGAGGACGGCCTGGCCGAAGCACCCGAGCACGGAACCACAGCCAC...