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| unieważnienie sygnału kolejowego; krzyż św. Andrzeja | |||
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signal : 21 phrases in 12 subjects |
| Automatic control | 1 |
| Economics | 1 |
| Finances | 1 |
| Life sciences | 1 |
| Lighting other than cinema | 1 |
| Nautical | 1 |
| Power lines | 1 |
| Radio | 2 |
| Rail transport | 3 |
| Telecommunications | 1 |
| Telegraphy | 1 |
| Transport | 7 |