| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] at [adj] time | 554 |
|
| 2 | [prep] [noun] [v-ing] at [adj] | 81 |
|
| 3 | [noun] [v-ing] at [adj] time | 36 |
|
| 4 | [prep] [v-ing] at [adj] time | 16 |
|
| 5 | [prep] [noun] [v-ing] [adj] time | 13 |
|
