| 100% | EIO | 3 | Vowel trio in "MacDonald's farm"? |
| 90% | EIO | 3 | Vowel trio in "Old MacDonald Had a Farm" |
| 76% | EIO | 3 | Vowel trio in "Old MacDonald..." |
| 66% | EIO | 3 | Vowels in "Old MacDonald Had a Farm" |
| 61% | IOU | 3 | Vowel trio in "anxious" |
| 54% | MOO | 3 | Cow's sound in "Old MacDonald Had a Farm" |
| 50% | EIEIO | 5 | Vowel sequence in the "Old MacDonald" lyrics |
| 49% | EIO | 3 | Vowels that end "Old MacDonald Had a Farm" |
| 49% | EIEIO | 5 | Vowels sung in "Old McDonald Had a Farm" |
| 48% | EIO | 3 | "Old MacDonald Had a Farm" ending vowels |
| 48% | BAAS | 4 | Sounds in "Old MacDonald Had a Farm" |
| 48% | OINK | 4 | Sound in "Old MacDonald Had a Farm" |
| 48% | MOO | 3 | Sound in "Old MacDonald Had a Farm" |
| 47% | FATES | 5 | Trio in Plato's "Republic" |
| 47% | EIO | 3 | Vowels at the end of "Old MacDonald Had a Farm" |
| 47% | EIO | 3 | Last letters in "Old MacDonald Had a Farm" |
| 47% | OINK | 4 | Pig sound in "Old MacDonald Had a Farm" |
| 46% | MICE | 4 | Trio in a children's rhyme |
| 46% | EWES | 4 | Farm animals that sound like vowels not seen in this puzzle? |
| 46% | OINKS | 5 | There are eight in "Old MacDonald Had a Farm" |
| 46% | OINK | 4 | One of eight in "Old MacDonald Had a Farm" |
| 45% | OINK | 4 | Sound on Old MacDonald's farm |
| 45% | MOO | 3 | Sound on Old MacDonald's farm |
| 45% | PIG | 3 | Member of Old MacDonald's farm |
| 45% | NEIGH | 5 | Sound on Old MacDonald's farm |
| 45% | EIEIO | 5 | Refrain on Old MacDonald's farm |
| 45% | AMOAMASAMAT | 11 | Trio in a Latin learner's lesson |
| 45% | STANZA | 6 | Each animal has one in "Old MacDonald Had a Farm" |
| 45% | EIEIO | 5 | String of nonsense letters in "Old MacDonald Had a Farm" |
| 45% | EIEIO | 5 | String of letters sung in "Old MacDonald Had a Farm" |