| Answer | Crossword Clue |
|---|---|
| EIEIO | Old MacDonald letters |
| EIEIO | 'Old MacDonald' letters |
| EIEIO | "Old MacDonald" letters |
| EIEI | Letters for Old MacDonald |
| EIO | "Old MacDonald" refrain letters |
| EIEIO | Letters for Old MacDonald |
| EIEIO | Refrain letters from "Old MacDonald" |
