| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] is essential [to-vb] | 270 |
|
| 2 | [pers pn] is essential [verb] | 270 |
|
| 3 | [pers pn] is [adj] to understand | 211 |
|
| 4 | [pers pn] is [adj] to understand | 203 |
|
| 5 | [pers pn] be essential to understand | 10 |
|
| 6 | [pron] is essential to understand | 10 |
|
| 7 | [pers pn] [is] essential to understand | 10 |
|
| 8 | [pers pn] [be] essential to understand | 10 |
|
| 9 | [pers pn] is essential to understand | 10 |
|
| 10 | [pers pn] is essential understand | 10 |
|
