| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be [adv] | 8007 |
|
| 2 | could [adv] be | 7500 |
|
| 3 | could [adv] [adv] | 3296 |
|
| 4 | could be [adv] | 2416 |
|
