| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pers pn] arrive at [art] airport | 6 |
|
| 2 | when [pers pn] arrive at [art] airport | 6 |
|
| 3 | [subord] [pers pn] arrive at [art] airport | 6 |
|
| 4 | [conj] [pers pn] arrive at [art] airport | 6 |
|
