| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] essential for [adj] [noun] | 52 |
|
| 2 | it [is] for [adj] [noun] | 46 |
|
| 3 | it [is] essential for [noun] | 16 |
|
| 4 | it [is] essential for [adj] | 11 |
|
