st: -reshape-? -xpose-?

[Alexander Tsai <atsai@post.harvard.edu>]

Dear statalisters,

This might be an easy question, but I'm not coming with any good solutions, 
and a search of the archive didn't yield any promising leads.

I have a dataset of survey responses that looks like this:

ID	q1_e1	q1_e2	q2_e1	q2_e2	...	q20_e1	q20_e2
1	1	1	0	1	...	1	1
2	0	0	1	1	...	0	1
...
100	1	1	1	1	...	1	1

There are more variables in the actual data than I show in the above 
example. (Variables extend from q1_e3, q1_e4, q1_e5 ... to q20_e3, q20_e4, 
q20_e5.)

I want the dataset to look like this:

ID	q	e1	e2	e3	e4	e5
1	1	1	1
1	2	0	1
	...
1	20	1	1
2	1	0	0
2	2	1	1
	...
2	20	0	1
...
100	1	1	1
100	2	1	1
	...
100	20	1	1

I've been toying with -reshape- and -xpose- for days, but I've got nothing. 
Any suggestions?

Much thanks,
Alex
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