5. (6 points) The following message was enciphered using an ADFGX cipher with substitution table A a mret d n F i/ O buy w z and keyword history. AFGAA XXFFX FAFFD XFDAA XXFGA AFFGF XGADA XXAAD Decipher the message. (Notice that the rectangle is not completely filled. Some columns will be longer than others. First, determine which columns will be "long" and which will be "short." Then as you remove columns from the ciphertext be careful to remove the number of letters that correspond to the length of the column.)