| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | two [noun pl] who had been [v-ing] | 6 |
|
| 2 | two [noun pl] who had been [v-ing] | 6 |
|
| 3 | two [noun pl] [Wh pn] had been [v-ing] | 6 |
|
