| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] april [adj] | 6034 |
|
| 2 | [prep] april [num ord] | 397 |
|
| 3 | [prep] [noun] 20th | 99 |
|
| 4 | [prep] april 20th | 11 |
|
