| Clue | Source | Date |
|---|---|---|
| C equivalents | The Washington Post | 12 Aug 2018 |
| C equivalents | LA Times Daily | 12 Aug 2018 |
| C equivalents | ||
| C equivalents | New York Times | 27 Sep 2015 |
| C equivalents | ||
| Equivalents of C's | ||
| Equivalents of C's | ||
| They may be scored as accidentals | ||
| They're equivalent to D double flats | ||
| Identical to C sounds. |