| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be kept [prep] [adj] | 47 |
|
| 2 | [vb mod] be kept in [adj] | 22 |
|
| 3 | [vb mod] be kept in [adj] | 22 |
|
| 4 | should be kept [prep] [adj] | 17 |
|
| 5 | [vb mod] be kept under [adj] | 15 |
|
| 6 | [vb mod] be kept under [adj] | 15 |
|
| 7 | must be kept [prep] [adj] | 9 |
|
| 8 | can be kept [prep] [adj] | 9 |
|
| 9 | will be kept [prep] [adj] | 7 |
|
| 10 | [vb mod] be kept [prep] constant | 5 |
|
