| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [to-vb] [adv prt] | 699 |
|
| 2 | [was/were] [v-ing] [adv prt] at | 241 |
|
| 3 | [was/were] [v-ing] [to-vb] at | 73 |
|
| 4 | [v-ing] [to-vb] [adv prt] at | 62 |
|
| 5 | [was/were] [to-vb] [adv prt] at | 12 |
|
