| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] [noun sg] | 376182 |
|
| 2 | essential [prep] [noun sg] | 223 |
|
| 3 | essential [prep] [adj] | 191 |
|
| 4 | essential [adj] [noun sg] | 129 |
|
