| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [be] at that time | 38 |
|
| 2 | [be] [v-ing] at that time | 19 |
|
| 3 | [noun] [be] [v-ing] at that | 12 |
|
| 4 | [noun] [v-ing] at that time | 11 |
|
