| Double Letters | Countries | % Correct |
|---|---|---|
| CC | Morocco | 94%
|
| Russia | 74%
| |
| PP | Philippines | 71%
|
| LL | Seychelles | 66%
|
| OO | Cameroon | 63%
|
| EE | Greece | 63%
|
| Andorra | 60%
| |
| Marshall Islands | 49%
| |
| TT | Saint Kitts and Nevis | 37%
|
| RR | Sierra Leone | 37%
|
| SS | Guinea-Bissau | 34%
|