| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a short time | 376 |
|
| 2 | [be] [prep] a time | 61 |
|
| 3 | [be] [prep] a short | 25 |
|
| 4 | [be] [prep] short time | 8 |
|
| 5 | [be] a short time | 5 |
|
