| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [adv prt] at the | 85 |
|
| 2 | could be [vb pp] at the | 45 |
|
| 3 | could be [vb pp] [adv prt] at | 15 |
|
| 4 | could be [vb pp] [adv prt] the | 8 |
|
