| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | by [noun] [noun sg] | 9286 |
|
| 2 | by [noun sg] [noun sg] | 5120 |
|
| 3 | [prep] mail [noun sg] | 193 |
|
| 4 | by mail [noun] | 115 |
|
| 5 | by mail [noun sg] | 112 |
|
