For example:

```
list1 = ['mory','alphabet','fruit']
list2 = ['apple','banana','pear']

string = " There was a mory and the thing was a alphabet within the fruit. There were still fruit. But the banana was still there."

```

Now what I want to do is to change each appearance of a word from `list1` with its equivalent in `list2`. For example, "There was a mory" will be changed to "There was a apple".

I want to do this using for loops, however I cannot figure out how to run the list multiple times to change every part of the string.