| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is [adv] [prep] | 4430 |
|
| 2 | [pron] is [adv] necessary | 681 |
|
| 3 | [pron] is necessary [prep] | 209 |
|
| 4 | is [adv] necessary [prep] | 201 |
|
| 5 | [pron] [adv] necessary [prep] | 9 |
|
