chr1	1000	2000	oneBlock	1000	+	1000	2000	0	1	1000,	0,
chr1	10000	20000	twoBlocks	999	+	10000	20000	0	2	100,200,	0,9800,
chr1	100000	200000	threeBlocks	998	-	0	0	0	3	100,200,300,	0,49800,99700,
