| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adj] for | 3918 |
|
| 2 | [pron] [be] essential for | 142 |
|
| 3 | it [be] essential [prep] | 137 |
|
| 4 | [pers pn] [be] essential for | 100 |
|
| 5 | it [be] essential for | 90 |
|
