| IB | This user graduated from secondary school with an IB Diploma. |
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| RYA | This User Is A RYA Dingy Instructor. |
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| math-3 | This user can contribute with advanced mathematical skills. |
| K | This user uses the Kelvin scale, because 0K is much cooler than −273.15°C or −459.67°F. |
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This user is a car enthusiast. |
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This user is a gearhead. |
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