| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it should [adv] [be] | 846 |
|
| 2 | it should [adv] [be] | 385 |
|
| 3 | it [modal v] therefore [be] | 146 |
|
| 4 | [pron] should therefore [be] | 39 |
|
| 5 | [pers pn] should therefore [be] | 31 |
|
| 6 | it should therefore [be] | 20 |
|
| 7 | it should therefore [be] | 20 |
|
