| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [adv] be [vb pp] | 4363 |
|
| 2 | [adv] be [vb pp] a | 245 |
|
| 3 | should [adv] be a | 201 |
|
| 4 | should be [vb pp] a | 122 |
|
