How do I make a program that can make a new word by adding the suffix "-on" to the end of the word?

I would like to create a program that makes a new word by adding the suffix "-on" to the end of the word. The program should keep making new words until it reaches the 9th word. How can I do that? <br><br>For example, if the word is "bubb", the program should make the words "bubbon", "bubbonon", "bubbononon", "bubbonononon", "bubbononononon", "bubbonononononon", "bubbononononononon", "bubbonononononononon", "bubbononononononononon"