| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] is necessary understand [det] [noun pl] | 5 |
|
| 2 | [subord] is necessary understand [det] [noun pl] | 5 |
|
| 3 | as is necessary understand [det] [noun pl] | 5 |
|
| 4 | as is necessary understand [det] [noun pl] | 5 |
|
