| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] at the back | 91 |
|
| 2 | [vb past] at the back | 88 |
|
| 3 | sat at the back | 12 |
|
| 4 | stood at the back | 10 |
|
| 5 | looked at the back | 8 |
|
