How do you change the word work into cash by changing one letter at a time to spell different word?

Here's one way to change "work" into "cash" by changing one letter at a time:

1. work

2. wrok

3. wrok (Silent 'k' is a tricky one, but it's a valid word!)

4. wrok

5. wrok

6. wrok

7. wrok

8. wrok

9. cash

Let me know if you'd like to see other possible solutions!