Preserving data (in alpha order) ACROSS multiple columns

[lasherdc]

I did not see a previous Q and A on this, but I am sorry if it has been asked & answered in the past.

My problem: I need to sort data across three columns, but preserve the alpha order across the three columns.

For example:

A	B	C
Adam
	Baker
Billy
Bob
		Charles
	Chuck
Conner
		David

<tbody>
</tbody>

This order is easy: alpha...the issue is maintaining the data in the original column.

What am I missing?

Thanks!