| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are to [be] [adj] | 159 |
|
| 2 | to [be] kept [adj] | 92 |
|
| 3 | are to [be] kept | 21 |
|
| 4 | are [be] kept [adj] | 8 |
|
