| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [v-ing] [prep] a few | 17 |
|
| 2 | been [v-ing] [prep] a [det] | 17 |
|
| 3 | been [v-ing] for a [det] | 12 |
|
| 4 | been [v-ing] for a [det] | 12 |
|
