POW Tap Code

Something for all of us to learn just in case. I suspect that if we are rounded up, it will be foreign troops engaged in the task they will probably be unfamiliar with the technique.

First, you drop the letter K. It's redundant
and that makes a nice simple 25 letters
to work with. Then you set up a matrix,
to help your memory. The matrix goes like
this.

  | 1 | 2 | 3 | 4 | 5 |
 -+---+---+---+---+---+
 1| A | B | C | D | E |
 -+---+---+---+---+---+
 2| F | G | H | I | J |
 -+---+---+---+---+---+
 3| L | M | N | O | P |
 -+---+---+---+---+---+
 4| Q | R | S | T | U |
 -+---+---+---+---+---+
 5| V | W | X | Y | Z |
 -+---+---+---+---+---+

... .  . .  ... ...  .... .....

.... ...  ..... ....  ... ..  . .

... ...  .... .  . ...  ..... .

.... ....  . .  ..... ...

... .  .... ...  .... .  ..... .   ?

Decoded: C-A-N-Y-O-U-H-A-N-D-L-E-T-A-P-C-O-D-E?