| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] at a [adj] | 106 |
|
| 2 | [is] [vb pp] at a [adj] | 91 |
|
| 3 | [is] [vb pp] at a [adj -er] | 12 |
|
| 4 | [is] aimed at a [adj] | 11 |
|
| 5 | [is] [vb pp] at a constant | 10 |
|
| 6 | [is] [vb pp] at a constant | 10 |
|
| 7 | [is] [vb pp] at a low | 7 |
|
| 8 | [is] put at a [adj] | 6 |
|
| 9 | [is] kept at a [adj] | 5 |
|
