| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] had been [v-ing] for [det] | 9 |
|
| 2 | [noun prp] has been [v-ing] for [det] | 6 |
|
| 3 | [noun prp] have been [v-ing] for some | 5 |
|
