| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [v-ing] [adv prt] at the | 62 |
|
| 2 | was [v-ing] at the time | 43 |
|
| 3 | [v-ing] [adv prt] at the time | 24 |
|
| 4 | was [adv prt] at the time | 9 |
|
