We Have Encoded a Message by Assigning the Numbers 1

Short Answer

We have encoded a message by assigning the numbers 1 - 26 to the letters a - z of the alphabet, respectively, and
assigning 27 to a blank space. We have further encoded it by using an encoding matrix. Decode this message by finding
the inverse of the encoding matrix and multiplying it times the coded message.
-The encoding matrix i $$A = \left[ \begin{array} { l l l } 1 & 2 & 2 \\1 & 3 & 2 \\1 & 2 & 3\end{array} \right] \text { and the encoded message is } 88,103,115,84,99,104,41,43,46,40,49,45$$ 86, 91, 113, 52, 61, 65.