| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adj] for | 24643 |
|
| 2 | be [adj] for | 22971 |
|
| 3 | be essential [prep] | 1003 |
|
| 4 | be essential [prep] | 1003 |
|
| 5 | be essential for | 458 |
|
| 6 | be essential for | 458 |
|
| 7 | [be] essential for | 458 |
|
