$\backslash$table$[[$A$,$B$,$C$,$D$,$E$,$F$,$G$,$H$,$I,J$,$K$,$L$,$M$,$N$,$O$],[$O$,1,2,3,4,5,6,7,8,9,10,11,12,13,14]]$

$\backslash$table$[[$P$,$Q$,$R$,$S$,$T$,$U$,$V$,$W$,$X$,$Y$,$Z$,,?,],[15,16,17,18,19,20,21,22,23,24,25,26,27,28]]$

Use the correspondence scheme above to convert the following to numeric values, in the form of a $38$ matrix $(8$ columns of $31$ vectors$).$ Remember, the encryption$/$decryption process is down the first column, then to the next column, so the first column should be the equivalent of MAR in the plaintext below. If necessary, use space$($s$)$ at the end to fill in your matrix. Don't forget the spaces and period! Name your plaintext matrix B$.$

MARY$\_$HAD$\_$A$\_$LITTLE$\_$LAMB.

B $=$

Define the encryption matrix $A=$

$\left[\begin{array}{ccc}8& 14& 0\\ 24& 17& 5\\ 3& 21& 2\end{array}\right]$

Calculate $C=A**B.$

$C=$

Convert C into $($mod $29).$ In other words, express each entry of C as its equivalent in $($mod $29).$

Use the correspondence scheme above to convert C$($mod $29)$ to alpha characters. Type your encrypted text in the space below. Encrypted text $=$

Copy$-$and$-$paste your MATLAB or Octave commands from the terminal window, and$/$or attach a file containing your by$-$hand work. Feel free to edit out any syntax errors and leave only the commands that were successfully used to obtain the answers above.