| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [adv] [prep] [noun] | 20 |
|
| 2 | could be [adv] [prep] [noun sg] | 10 |
|
| 3 | could be [adv] at [noun] | 7 |
|
| 4 | could be [adv] [prep] [noun prp] | 6 |
|
