In your preferred programming language, write a program that will ask the user to enter any plaintext. Then, it will encrypt/decrypt that string using Caesar Cipher and prints out
the results on the screen. In this time, the user will not be asked to enter any keys,
encryption should be based on the following conditions:
a. Replace the characters at the odd positions by the previous character in the alphabet.
b. Replace the characters at the even positions by the next 3 character in the alphabet

Write a program that keeps asking the user for new values to be added to a list until the user enters 'exit' ('exit' should not be added to the list). these values entered by the user are added to a list we call 'initial_list'. then write a function that takes this initial_list as input and returns another list with 3 copies of every value in the initial_list. finally, inside print out all of the values in the new list. for example: input: enter value to be added to list: a enter value to be added to list: b enter value to be added to list: c enter value to be added to list: exit output: a b c a b c a b c note how 'exit' is not added to the list. also, your program needs to be able to handle any variation of 'exit' such as 'exit', 'exit' etc. and treat them all as 'exit'.