1@HD VN:1.0 GO:none SO:coordinate 2@SQ SN:chr1 LN:249250621 3three_blocks 16 chr1 1 40 10M10N10M10N10M * 0 0 GAAGGCCACCGCCGCGGTTATTTTCCTTCA CCCDDB?=FJIIJIGFJIJHIJJJJJJJJI MD:Z:50 4