| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] | 6057 |
|
| 2 | they have been [v-ing] | 886 |
|
| 3 | they have been [prep] | 466 |
|
| 4 | they been [v-ing] [prep] | 8 |
|
