| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [prep] a [noun] | 1136 |
|
| 2 | i [prep] a [noun sg] | 1104 |
|
| 3 | [pron] [prep] a while | 261 |
|
| 4 | i [prep] a while | 16 |
|
| 5 | i [prep] [art] while | 16 |
|
| 6 | i [prep] [art] while | 16 |
|
| 7 | i [prep] a while | 16 |
|
