| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] at one time | 52 |
|
| 2 | [vb past] [prep] one time | 52 |
|
| 3 | [vb past] at one time | 52 |
|
| 4 | had [prep] one time | 34 |
|
| 5 | did [prep] one time | 5 |
|
