| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] [art] while | 106 |
|
| 2 | [vb pp] [prep] a while | 106 |
|
| 3 | [vb pp] for [art] while | 102 |
|
| 4 | [vb pp] for [art] while | 102 |
|
| 5 | seen [prep] [art] while | 6 |
|
