| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [subord] [art] [noun sg] | 888 |
|
| 2 | useful [subord] [art] [noun sg] | 61 |
|
| 3 | be useful [subord] [art] | 29 |
|
| 4 | be useful [subord] [noun sg] | 10 |
|
