| Keyword | Most frequent expressions (number of websites) |
|---|---|
| f-104 | lockheed f-104 (3), f-104 starfighter (3), role f-104 (2), international f-104 (2), f-104 society (2), f-104 combat (1), f-104 type (1), f-104 operator (1), f-104 serial (1), f-104 cockpit (1), f-104 special (1), dutch f-104 (1), f-104 depot (1) |
| f-16 | rnlaf f-16 (1), f-16 squadron (1), f-16 youth (1), f-16 adult (1), f-16 woman (1), old f-16 (1), f-16 shelter (1), eye f-16 (1), f-16 pilot (1), flite f-16 (1), f-16 falcon (1), f-16 thunderbirds (1), year f-16 (1) |