Cross Purchase Help

[cdubs34]

Hello,

I am trying to get at some cross buying behavior from a large data set that I have. Here is a simple, example of the data I have:

Name	Product
John	Brand A
Mark	Brand B
John	Brand C
Amy	Brand A
Amy	Brand D
Amy	Brand C

<tbody>
</tbody>

And then this is my desired output:

	Brand A	Brand B	Brand C	Brand D
Brand A			<style><!--table {mso-displayed-decimal-separator:"\."; mso-displayed-thousand-separator:"\,";}@page {margin:.75in .7in .75in .7in; mso-header-margin:.3in; mso-footer-margin:.3in;}td {padding-top:1px; padding-right:1px; padding-left:1px; mso-ignoreadding; color:black; font-size:12.0pt; font-weight:400; font-style:normal; text-decoration:none; font-family:Calibri, sans-serif; mso-font-charset:0; mso-number-format:General; text-align:general; vertical-align:bottom; border:none; mso-background-source:auto; mso-pattern:auto; mso-protection:locked visible; white-space:nowrap; mso-rotate:0;}--></style> The output I am looking for in this cell for example would be the number of people that buy both Product A and Product C. So in this example it would be 2 because John and Amy bought both these products <colgroup><col width="87" style="width:65pt"> </colgroup><tbody> <!--StartFragment--> <!--EndFragment--> </tbody>
Brand B
Brand C
Brand D

<tbody>
</tbody>

There is a ton of data in my actual worksheet so a formula that would make it easy/efficient to get to the desired output would be great. Thanks very much.