| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [det] [noun sg] [prep] | 1080 |
|
| 2 | a [det] hours [prep] | 205 |
|
| 3 | a [det] hours [noun sg] | 12 |
|
| 4 | [det] hours [noun sg] [prep] | 6 |
|
