The grid is a usual data table. As discribed it is 26 row * 26 columns
The clolumns header are letters , the row headers are numbers. Th
entry in each cell should be the product name.

example:
Input data
item 1 - a1, b2
item 2 - a2
item 3 - b1

Result:
---| a | b |
1 | item 1 | item 3 |
2 | item 2 | item 1

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fredl
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