| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [det] [conj] a [noun] [adv] | 27 |
|
| 2 | [prep] [det] [conj] [art] century [adv] | 5 |
|
| 3 | [prep] [adj] [conj] a century [adv] | 5 |
|
