| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adj] because they [verb] | 160 |
|
| 2 | be [adj] because they [verb] | 151 |
|
| 3 | be useful because [pron] [verb] | 13 |
|
| 4 | be useful [subord] they [verb] | 7 |
|
| 5 | be useful [conj] they [verb] | 7 |
|
| 6 | [be] useful because they [verb] | 5 |
|
| 7 | be useful because they [verb] | 5 |
|
| 8 | be useful because they [verb] | 5 |
|
