| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [num ord] [prep] | 259 |
|
| 2 | [prep] a [num ord] [prep] | 259 |
|
| 3 | by [art] [num ord] [prep] | 103 |
|
| 4 | by a [adj] [prep] | 88 |
|
| 5 | by a [num ord] [prep] | 49 |
|
