| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] [noun pl] | 352 |
|
| 2 | been [v-ing] [prep] several [noun pl] | 26 |
|
| 3 | have been [v-ing] [prep] several | 25 |
|
| 4 | have been [prep] several [noun pl] | 9 |
|
