| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] an exchange of [noun] [prep] | 27 |
|
| 2 | [prep] an exchange of [noun] [prep] | 27 |
|
| 3 | [prep] an exchange of [noun pl] [prep] | 20 |
|
| 4 | [prep] an exchange of [noun] with | 9 |
|
| 5 | in an exchange of [noun] [prep] | 8 |
|
| 6 | in an exchange of [noun] [prep] | 8 |
|
| 7 | [prep] an exchange of [noun sg] [prep] | 7 |
|
| 8 | [prep] an exchange of [noun] between | 6 |
|
| 9 | [prep] an exchange of letters [prep] | 6 |
|
| 10 | [prep] an exchange of letter [prep] | 6 |
|
| 11 | [prep] an exchange of [noun] in | 5 |
|
