| Answer | Crossword Clue |
|---|---|
| PAS | Systems for speakers (Abbr.) |
| PAS | Systems for speakers |
| ESL | Class for non-native speakers: Abbr. |
| RRS | Transportation systems (abbr.) |
| RRS | Transportation systems: Abbr. |
| RYS | Streetcar systems: Abbr. |
| RRS | Transport systems: Abbr. |
| GOVTS | Ruling systems: abbr. |
