| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of groups [prep] [noun pl] [prep] | 9 |
|
| 2 | [noun sg] of groups [prep] [noun pl] [prep] | 7 |
|
| 3 | of [adj] groups [prep] [noun pl] [prep] | 9 |
|
