| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] be [adv prt] at | 12 |
|
| 2 | [vb infin] [been] [adv prt] at | 11 |
|
| 3 | [vb infin] been [adv prt] at | 11 |
|
| 4 | have [be] [adv prt] at | 10 |
|
