| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a month | 340 |
|
| 2 | [prep] a month [prep] | 187 |
|
| 3 | [noun] [prep] a [prep] | 138 |
|
| 4 | [noun] a month [prep] | 126 |
|
| 5 | [noun] [prep] month [prep] | 54 |
|
