Repeat unit GA/TC repeats 4 times in the reference sequence.
...AAAATATTGATTAAAATATCCTGGCCCTTGATGGCTGAGTTCTTTGGCCTTGGAGGTGAGTGTCCCGCTCCCCCAGTCTTGTCCCCAAGGCAGCAGCCCC
TCCTGCTCCATTGAGTGGGGAGAGAGAAGCTGGGGGCTTAGTGGGAGGAGGTGCGGTTGGCTCTGCAGGAGGGCGCAGGGGAAGGAGACATTAGGAGGGA
AGAACTGCATCTTTCCAGAAAGTTCTCCCGTTGGGGGTTCCCTCCAG...