| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | an [noun] of [noun pl] [prep] | 395 |
|
| 2 | an [noun sg] of [noun pl] [prep] | 395 |
|
| 3 | [art] exchange of [noun pl] [prep] | 62 |
|
| 4 | [art] exchange of [noun pl] [prep] | 62 |
|
| 5 | an exchange of [noun] [prep] | 49 |
|
| 6 | an exchange [prep] [noun pl] [prep] | 39 |
|
| 7 | an exchange [prep] [noun pl] [prep] | 39 |
|
| 8 | a exchange of [noun pl] [prep] | 38 |
|
| 9 | an exchange of [noun pl] [prep] | 38 |
|
| 10 | an exchange of [noun pl] [prep] | 38 |
|
