Repeat unit A/T repeats 20 times in the reference sequence.
...AATAAATAAGCAATTGGTTTAGCCAGGGTAGAGGGTAGGGACATGGGTGCCACTCAAACATTGAAATTTCCTAGCAATCAGACAGAGCAGAGCTGGCCTT
GGGAGGAACAAGTCTGTAATTTTTTTTTTTTTTTTTTTTACTTTGGACAGAGTTTTTAAGCAACTGGTTTTGGAAAAAGAAGGTGGTTCTACCAAGAAAG
GCTAAGATGGGCTTGAAGCTTACATATGCCGCCAACCCATATCCCCAACCAGCACCCTG...