| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [prep] a [noun] | 1729 |
|
| 2 | they [prep] a [noun sg] | 1669 |
|
| 3 | [pron] [prep] a while | 261 |
|
| 4 | they [prep] [art] while | 30 |
|
| 5 | they [prep] a while | 30 |
|
| 6 | they [prep] a while | 30 |
|
| 7 | they [prep] [art] while | 30 |
|
