String combining column names. Extract values from these columns.

Hi, I have 40 columns named 001,..., 040. They consist of up to 200 hundred NATURAL numbers. I need to create a macro that will copy values only from certain columns based on the strings I have to process (e.g. 002-040-017-023 or 009-008 or 006 etc.).
Example:

IN
001	002	003	004
1	2	3	0
2	4	7	1
3	6	9	2
4	8		
5	10		

OUT
001-004-002	004-003
0	0
1	1
2	2
3	3
4	7
5	9
6	
7	
8	
9	
10

Any idea? I was thinking about selecting values based on prefix from a column where I would store all column values (with prefixes representing column names). Then the macro would remove prefixes, blanks, duplicates and sort it out values. I am able to produce everything except for the function selection column values.