| 1 | But they have to read the panel in a mirror. | |
| 2 | People could study it to pass their driving exam. | |
| 3 | The visual chart commonly seen uses letter "E" to point the direction. | |
| 4 | Any trouble breathing? Now, can you read the letters on the third line? | |
| 5 | The optician asked him to point to a test card. |
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