Plz use python3----For example:

Type the string to be translated: By the way, can I have a cheeseburger?

BY THE WAY CAN I HAVE A CHEESEBURGER 

Do you want to replace letters? YES

After replacing words BTW I CAN HAS CHEEZBURGER 

The user needs type any words they want and the system will transfer their words into the new string.(You may not use any built-in find, replace, encode, or translate functions, but you may write your own version of these functions if you wish, and you may use the indexing operator (i.e., the square brackets), the slicing operator (i.e., the colon), the "in" operator, and the len() function. and you are not allow to use upper())

Write a function to replace at least different four words with established abbreviations (e.g, replace "PLEASE" with "PLZ") of your choosing. This function must take only the string to be modified as an argument and must return the string with the replacements. The restrictions (in terms of what you can and cannot user) are the same as with the previous item