Repeat unit GCC/GGC repeats 6 times in the reference sequence.
...GCCACCATCTTCGGAGCGCGGCCGGCGAGCGAGGCGCGGGGACCCCGGCACGCTCCGGGCCGCCCCCGCGCTCCCCGCAGCTCCCGCGGCCGCCGGCTGC
CGCTCGGGCTCCCGCTCGGGCCGCCGCCGCCGCCCCCCTCCCCACACCCCTGTCCCCGCTGGAGGGGAGGGTGATGGGGAAGGCGCCGGGGGGACGCGGG
CCGAGGCGGAGAGGGCGGGGCCTGGGGGAGGAGCCGAGGGAGGAAAAGGAGGAGGGA...