| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] for [adj] | 455 |
|
| 2 | [been] [verb] for several | 50 |
|
| 3 | [been] [v-ing] [prep] several | 27 |
|
| 4 | [be] [v-ing] for several | 27 |
|
