chr	start	end	cn	loh
chr1	1	60490000	1	1
chr1	60490001	60499999	2	0
chr1	60500000	63000000	0	1
chr1	63000001	63000999	2	0
chr1	63001000	82342100	1	1
chr1	82342101	121499999	2	0
chr1	128900001	249250621	2	0
