| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have had a [noun] | 230 |
|
| 2 | have [verb] a letter | 33 |
|
| 3 | have [vb pp] a letter | 31 |
|
| 4 | [verb] had a letter | 28 |
|
| 5 | have had a letter | 28 |
|
| 6 | [vb base] had a letter | 16 |
|
| 7 | have had [art] letter | 6 |
|
| 8 | have had a letter | 6 |
|
| 9 | have have a letter | 6 |
|
| 10 | have had [art] letter | 6 |
|
