| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be a [adv] | 334 |
|
| 2 | could [adv] be [adv] | 228 |
|
| 3 | could [adv] be a | 227 |
|
| 4 | could be a [adv] | 61 |
|
