| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] ['s] training course | 11 |
|
| 2 | [noun pl] ' training course | 11 |
|
| 3 | [noun pl] ' training course | 11 |
|
| 4 | teachers [unc] training course | 8 |
|
