Show that the set of letters needed to spell “CATARACT” and the set of letters needed to spell “TRACT” are equal.

Explanation

To show that the set of letters needed to spell "CATARACT" and the set of letters needed to spell "TRACT" are equal, we will follow these steps:

### Step 1: Identify the letters in "CATARACT"
We start by listing the letters in the word "CATARACT":
- C
- A
- T
- A
...