| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [prep] [adv] an hour | 12 |
|
| 2 | [adj] [prep] [adv] an [noun sg] | 11 |
|
| 3 | [adj] [prep] [adv] an [noun] | 11 |
|
| 4 | [adj] [prep] [adv] [art] hour | 8 |
|
| 5 | [adj] [prep] [adv] a hour | 8 |
|
| 6 | [adj] [prep] [adv] [art] hour | 8 |
|
| 7 | [adj] [prep] [adv] an hour | 8 |
|
| 8 | [adj] [prep] [adv] an hour | 8 |
|
