| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] for [adj] hour | 180 |
|
| 2 | back for [adj] [noun] | 83 |
|
| 3 | [adv prt] for [adj] hour | 80 |
|
| 4 | back [prep] [adj] hour | 12 |
|
| 5 | back for [adj] hour | 5 |
|
