| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adj] [conj] it [verb] | 1043 |
|
| 2 | be [adj] [conj] it [verb] | 925 |
|
| 3 | be useful [conj] [pron] [verb] | 51 |
|
| 4 | be useful [conj] it [verb] | 17 |
|
| 5 | [be] useful [conj] it [verb] | 17 |
|
