| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | based at [noun] | 381 |
|
| 2 | based at [noun prp] | 353 |
|
| 3 | based at [noun sg] | 23 |
|
| 4 | based at raf | 9 |
|
| 5 | based at raf | 9 |
|
| 6 | based at abingdon | 5 |
|
| 7 | based at abingdon | 5 |
|
