help for matrix database

[gvanaco]

I would set up a table based on an array

first table goes from a to z (27 colums).
the second table goes from 1 to 11 (12 colums)

A value that I would store into the tables is a9, g8, p9, t4, e2, h1

What is the contruction to fill the tables and how can I search for example p9?

Thanks