| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] a [det] [noun] | 2235 |
|
| 2 | [conj] a [det] hour | 310 |
|
| 3 | [coord] a [adj] hour | 297 |
|
| 4 | [coord] [art] [det] hour | 285 |
|
