| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is recommended [conj] | 117 |
|
| 2 | it is [conj] [det] | 67 |
|
| 3 | is recommended [conj] [det] | 21 |
|
| 4 | it is recommended [det] | 16 |
|
