First were going to talk about my favorite cipher: the Greek Square Cipher.  It looks like this:



                                                    1     2      3     4     5
                                             1     a     b      c     d     e
                                             2     f     g      h     ij     k
                                             3     l     m     n     o     p
                                             4    q      r      s     t      u
                                             5    v     w     x    y      z

If you were to encipher my dog's name(Kenzie) it look like this:
                                          251533552415

Q@A's: Q: Why are i and j in the same spot?
A:The reason why is it wouldn't fit in the square.  The person who is solving a code should know it when he/she realizes it's an I or j.