Repeat unit GC/GC repeats 5 times in the reference sequence.
...GATCTGGTCCGGACCCTGAGCTCGGCAGGACCTGTGCGCACGCAGGTAGCGTCGCGTCCTCCCCCAGGCTGCGAGAGGTTGCTCTGCCATCAGGCCATGG
ACCCCGAGCCGCCCGTGCTGCGCGCGCGCGTGTGCGCGCCCCCGCCTGCGCCCATGCCTGCGCCGGGGGAGGCGAAGGAGGCTCCAGTCTTAGAAAGAGC
AGCTTCTGGAACTCACCACCCAGGCCGGCCGCCGCTCGGCCCCGTCCCGC...