| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] teachers and [noun pl] [v-ing] | 5 |
|
| 2 | [prep] teachers and [noun pl] [v-ing] | 5 |
|
| 3 | teachers and [noun pl] [v-ing] [prep] | 6 |
|
| 4 | teachers and [noun pl] [v-ing] [prep] | 6 |
|
