| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] at an [noun sg] | 148 |
|
| 2 | at an average [noun sg] | 57 |
|
| 3 | [vb pp] an average [noun sg] | 12 |
|
| 4 | [vb pp] at an average | 8 |
|
