start-of-block | signal
| signal | |
| gen. | Anzeichen; Signal; Zeichen |
| tech. | Anzeige; Kennzeichen; Meldung; Warnsignal; Wink |
| signals | |
| gen. | Signale; Signalanlage |
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| SOB | |||
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start-of-block : 2 phrases in 2 subjects |
| Computers | 1 |
| Telegraphy | 1 |