| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] at about the age | 6 |
|
| 2 | at about the age [prep] | 14 |
|
| 3 | at about the age of | 14 |
|
| 4 | at about the age of | 14 |
|
| 5 | at about the age [prep] | 14 |
|
