chr            start        end
chr21   9411509 9411529
chr21   9411510 9411529
chr21   9411509 9411529
chr21   9411569 9411589
chr21   9411571 9411591
chr21   9411572 9411592
chr21   9411573 9411593
chr21   9411575 9411595
chr21   9411578 9411598