| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for [adj] hours [art] [noun sg] | 97 |
|
| 2 | a [adj] hours [art] [noun sg] | 36 |
|
| 3 | for a [adj] hours [art] | 10 |
|
| 4 | for a [adj] [art] [noun sg] | 6 |
|
