| Answer | Crossword Clue |
|---|---|
| ETS | Space aliens (Abbr.) |
| ETS | Space aliens |
| UFO | Space alien's ship |
| ETS | Space aliens, for short |
| UFOS | NASA rockets, to space aliens |
| ETS | Aliens: Abbr. |
| ESL | Alien's course: Abbr. |
| ESL | Aliens' study: Abbr. |
| ESL | Class for aliens Abbr.: |
| ESL | Course for aliens: Abbr. |
| ESL | Course for some aliens: Abbr. |
| ESL | What some aliens take (abbr.) |
| ESL | Course for some aliens (abbr.) |
| ESL | Aliens might take it: Abbr. |
| ESL | Some aliens take it: Abbr. |
