--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/a_b_c.core.txt	Mon Mar 18 10:59:29 2019 -0400
@@ -0,0 +1,5 @@
+ID	LENGTH	ALIGNED	UNALIGNED	VARIANT	HET	MASKED	LOWCOV
+a	700	51	649	0	0	0	0
+b	700	51	649	1	0	0	0
+c	700	51	649	1	0	0	0
+Reference	700	700	0	0	0	0	0