| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] at [adj] levels of | 10 |
|
| 2 | be [vb pp] at [adj] levels [prep] | 10 |
|
| 3 | be [vb pp] at [det] levels [prep] | 9 |
|
| 4 | be [vb pp] at [adj] levels from | 7 |
|
| 5 | be [vb pp] at all levels [prep] | 7 |
|
| 6 | be [vb pp] at all levels [prep] | 7 |
|
| 7 | be [vb pp] at [num] levels [prep] | 6 |
|
| 8 | be [vb pp] at different levels [prep] | 5 |
|
| 9 | be [vb pp] at different levels [prep] | 5 |
|
| 10 | be [vb pp] at [adj] levels in | 5 |
|
