| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to be kept [prep] [adj] [noun] | 22 |
|
| 2 | to be kept [prep] [adj] [noun] | 22 |
|
| 3 | to be kept [prep] [adj] [noun sg] | 13 |
|
| 4 | to be kept [prep] [adj] [noun pl] | 9 |
|
| 5 | to be kept in [adj] [noun] | 7 |
|
| 6 | to be kept in [adj] [noun] | 7 |
|
