| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [det] hour | 334 |
|
| 2 | [noun prp] [prep] a [det] | 165 |
|
| 3 | [noun prp] [prep] a hour | 18 |
|
| 4 | [noun prp] [prep] [det] hour | 9 |
|
| 5 | [noun prp] a [det] hour | 7 |
|
