| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] a [det] hour | 310 |
|
| 2 | [conj] a [det] hours | 289 |
|
| 3 | [coord] a [det] hour | 283 |
|
| 4 | and a [det] hour | 280 |
|
| 5 | and a [det] hour | 280 |
|
| 6 | [conj] a half hour | 274 |
|
| 7 | [conj] a few hour | 36 |
|
| 8 | [subord] a [det] hour | 23 |
|
| 9 | [conj] a [det] hour | 21 |
|
| 10 | than a [det] hour | 19 |
|
| 11 | than a [det] hour | 19 |
|
