 |
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| operator talk-key (ssn); operator talkkey (ssn) | |||
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| operator talk key (ssn); operator talkkey (ssn) | |||
| operator: 11 phrases in 8 subjects |
| Abbreviation | 4 |
| Business | 1 |
| Computers | 1 |
| Education | 1 |
| Information technology | 1 |
| Telecommunications | 1 |
| Trademark | 1 |
| Transport | 1 |