| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adj] [verb] these | 111 |
|
| 2 | is useful [verb] [adj] | 33 |
|
| 3 | is useful [verb] [det] | 17 |
|
| 4 | [be] useful [verb] these | 9 |
|
| 5 | be useful [verb] these | 9 |
|
| 6 | is useful [verb] these | 6 |
|
| 7 | [is] useful [verb] these | 6 |
|
