| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to be [prep] [art] [adj] | 738 |
|
| 2 | be kept [prep] [art] [adj] | 138 |
|
| 3 | to be kept [prep] [art] | 59 |
|
| 4 | to be kept [prep] [adj] | 24 |
|
