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This was developed as an age test by an R&D department at Harvard
University. Take your time, and see if you can read each line aloud
without a mistake. The average person over 40 years of age can't do it!

1. This is this cat.
2. This is is cat.
3. This is how cat.
4. This is to cat.
5. This is keep cat.
6. This is an cat.
7. This is ass cat.
8This is busy cat.
9. This is for cat.
10. This is forty cat.
11. This is seconds cat.


Now go back and read aloud the third word in each line from the top down