| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [adv prt] at | 2544 |
|
| 2 | [been] [v-ing] [adv prt] | 1534 |
|
| 3 | [been] [v-ing] at | 511 |
|
| 4 | [been] [adv prt] at | 58 |
|
