For that one you get a code like <3 letters>-<3 numbers>-<letter><number>. Each letter represents a row, each number a column, and the final letter and number combination lets you know which row and column contains the solution.
For example if you get INS-701-N1, N is the second letter and 1 is the third number. So you look up row 2 column 3 in the table and that gives you a solution.
Thanks for playing!