| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [adv prt] at the | 885 |
|
| 2 | [v-ing] at the time | 192 |
|
| 3 | [adv prt] at the time | 131 |
|
| 4 | [v-ing] [adv prt] the time | 15 |
|
