$//$ TODO: You should remove from "oldString" all instances of the text found in

"commandWords" starting from index $1$ to the end of the string array

$//1.$ First check if the length of commandWords is less than $2.$ If it is$,$ then

print an error using printHelp and return null.

$//2.$ Get the text you need to remove from oldString. Use combineWordsFrom$($

commandWords,$1)$ to get the appropriate text.

$//3.$ Remove the text from oldString using the String function replaceAll.

$//4.$ Return the String that is returned from the replaceAll function.