| Réponse | Nombre de lettres |
|---|---|
| IRA | 3 lettres |
| IRC | 3 lettres |
| IRE | 3 lettres |
| IRI | 3 lettres |
| IRM | 3 lettres |
| IRN | 3 lettres |
| IRO | 3 lettres |
| IRS | 3 lettres |
| IRT | 3 lettres |
| IRU | 3 lettres |
| ISA | 3 lettres |
| ISB | 3 lettres |
| ISC | 3 lettres |
| ISE | 3 lettres |
| ISF | 3 lettres |
| ISI | 3 lettres |
| ISK | 3 lettres |
| ISO | 3 lettres |
| ISP | 3 lettres |
| ISR | 3 lettres |
| ISS | 3 lettres |
| IST | 3 lettres |
| ITA | 3 lettres |
| ITD | 3 lettres |
| ITE | 3 lettres |
| ITI | 3 lettres |
| ITL | 3 lettres |
| ITN | 3 lettres |
| ITO | 3 lettres |
| ITR | 3 lettres |
| ITT | 3 lettres |
| ITU | 3 lettres |
| IUE | 3 lettres |
| IUL | 3 lettres |
| IUN | 3 lettres |
| IUO | 3 lettres |
| IUT | 3 lettres |
| IVA | 3 lettres |
| IVE | 3 lettres |
| IVG | 3 lettres |
| IVI | 3 lettres |
| IVO | 3 lettres |
| IWO | 3 lettres |
| IXA | 3 lettres |
| IXE | 3 lettres |
| JAM | 3 lettres |
| JAN | 3 lettres |
| JAR | 3 lettres |
| JAS | 3 lettres |
| JAT | 3 lettres |