| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] some [prep] | 6 |
|
| 2 | had been [v-ing] some of | 6 |
|
| 3 | had been [v-ing] some [prep] | 6 |
|
| 4 | had been [v-ing] some of | 6 |
|
