| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [verb] for several | 50 |
|
| 2 | been [verb] for several | 50 |
|
| 3 | [been] [v-ing] for several | 26 |
|
| 4 | [been] [vb pp] for several | 24 |
|
| 5 | [been] run for several | 6 |
|
| 6 | [been] running for several | 5 |
|
