| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] essential for [adj] | 77 |
|
| 2 | [be] essential [verb] [adj] | 52 |
|
| 3 | [be] essential for [verb] | 39 |
|
| 4 | [be] for [verb] [adj] | 13 |
|
| 5 | essential for [verb] [adj] | 8 |
|
