| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] at the | 226 |
|
| 2 | [v-ing] at the time | 190 |
|
| 3 | [is] at the time | 16 |
|
| 4 | [is] [v-ing] the time | 11 |
|
