| Keyword | Most frequent expressions (number of websites) |
|---|---|
| ifr | ahol ifr (1), ifr repültünk (1), rule ifr (1), ifr additional (1), hrs ifr (1), sep ifr (1), ifr course (1), able ifr (1), ifr condition (1), vfr ifr (1), ifr pilot (1), category ifr (1), ifr ready (1) |