st: Reshaping but not numeric and more a loop needed!

[Miyu Lee <miyu.lee1@googlemail.com>]

Hello

I want to reshape the following table

A           B
1.11    1.11
1.11    1.12
1.11    1.13
1.11    1.14
1.11    1.15
1.11    1.16
1.11    1.19
1.11    1.26
1.11    1.28
1.11    1.29
1.11    1.63
1.11    1.64
1.20    1.11
1.20    1.12
1.20    1.20
1.20    1.20
1.21    1.13
1.21    1.14
1.21    1.21
1.21    1.22
1.21    1.23
etc     etc

to look like this:

A          B1       B2     B3
1.11    1.11     1.12    1.13 etc
1.20    1.11     1.12    1.20 etc
1.21    1.14 etc.

!!! my ideal would be if STATA just puts the B value next to the B
value of the first observation within each group, as long as the A
values are the same.!!!

reshape does not work here because it creates a huge matrix where all
identical B values are stacked on top of each other and/or there might
also be a problem that the size of the group is not equal.

any suggestions would be helpful. the matrix is very long so a loop or
anything similar seems the only alternative.

Many thanks

Miyu
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