miller/c/reg_test/input/clean-whitespace.csv

1	n	a	b	c
2	1	xy	2	3
3	2	xy	2	3
4	3	xy	2	3
5	4	xy	2	3
6	5	xy	2	3
7	6	xy	2	3
8	7	xy	2	3
9	8	xy	2	3
10	9	xy	2	3
11	10	xy	2	3
12	11	xy	2	3
13	12	xy	2	3
14	13		2	3
15	14		2	3
16	15		2	3
17	16		2	3