Repeat unit -----CA/TG----- repeats 18 times in the reference sequence.
...GCCGCTGGATCCTGCCGTCCAGCTCAGCCAGGAGGACCCCGGCCATCCTGATCAGTGAGGTGGTCAGATCCGTAAGTGAGCCTTCCCATTCCCCTCACAC
CTGCACGTGCCACACGCACCACACACGCCACACACCCCACACACACACACCGCCCACACACATGCCACTTGCACACACACCCCTCATGCATGCAACACAC
ACACAGGCCACACGCACCATAGACACCACACACACATGCCACATGCACACACATACACGGCATGCACCATACACACAACACA...