| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [adv] for several | 5 |
|
| 2 | have been [adv] for several | 5 |
|
| 3 | been [v-ing] [adv] for several | 8 |
|
| 4 | been [verb] [adv] for several | 8 |
|
| 5 | been [adv] for several [noun pl] | 5 |
|
| 6 | been [adv] for several [noun] | 5 |
|
