| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [verb] [prep] a [noun] | 2386 |
|
| 2 | are [vb pp] [prep] a [noun] | 1825 |
|
| 3 | be kept [prep] a [noun] | 206 |
|
| 4 | [be] kept [prep] a [noun] | 206 |
|
| 5 | are kept [prep] [art] [noun] | 68 |
|
| 6 | are kept [prep] [art] [noun] | 68 |
|
| 7 | are kept [prep] a [noun] | 34 |
|
| 8 | are keep [prep] a [noun] | 34 |
|
| 9 | are kept [prep] a [noun] | 34 |
|
| 10 | [am/are] kept [prep] a [noun] | 34 |
|
