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| English thesaurus | |||
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| short-code dialing (ssn); speed dialing (ssn) | |||
| abbreviated: 20 phrases in 10 subjects |
| Airports and air traffic control | 3 |
| American usage, not spelling | 2 |
| Aviation | 5 |
| Computers | 1 |
| Economy | 1 |
| General | 2 |
| Human rights activism | 2 |
| Information technology | 2 |
| Mathematics | 1 |
| Military | 1 |
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