| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been [v-ing] [prep] | 256 |
|
| 2 | that have been [v-ing] [prep] | 127 |
|
| 3 | that they have been [v-ing] | 71 |
|
| 4 | that they have been [prep] | 16 |
|
