| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] at [art] | 66532 |
|
| 2 | [noun pl] at [art] | 15321 |
|
| 3 | hours [prep] [art] | 1480 |
|
| 4 | hours [prep] [art] | 1480 |
|
| 5 | hour at [art] | 167 |
|
| 6 | hours at [art] | 118 |
|
| 7 | hours at [art] | 118 |
|
