#Japt, 13 bytes

d`ßÈ`í8#ì)pu

Includes an unprintable (charcode 153) after the #.

Try it

d`ßÈ`í8#ì)pu      :Implicit input of string
d                 :For each pair of characters in the following, replace the first with the second
 `ßÈ`             :  Compressed string "bise"
     í            :  Interleave
      8#          :    8153
         ì        :    To digit array
          )       :  End interleave
           p      :  Append
            u     :    Uppercase

Japt, 13 bytes

d`ßÈ`í8#ì)pu

Includes an unprintable (charcode 153) after the #.

Try it

d`ßÈ`í8#ì)pu      :Implicit input of string
d                 :For each pair of characters in the following, replace the first with the second
 `ßÈ`             :  Compressed string "bise"
     í            :  Interleave
      8#          :    8153
         ì        :    To digit array
          )       :  End interleave
           p      :  Append
            u     :    Uppercase

#Japt, 13 bytes

d`ßÈ`í8#ì)pu

Try it

#Japt, 13 bytes

d`ßÈ`í8#ì)pu

Includes an unprintable (charcode 153) after the #.

Try it

d`ßÈ`í8#ì)pu      :Implicit input of string
d                 :For each pair of characters in the following, replace the first with the second
 `ßÈ`             :  Compressed string "bise"
     í            :  Interleave
      8#          :    8153
         ì        :    To digit array
          )       :  End interleave
           p      :  Append
            u     :    Uppercase