| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been [v-ing] the | 44 |
|
| 2 | they 've been [v-ing] the | 15 |
|
| 3 | they had been [v-ing] the | 14 |
|
| 4 | they have been [v-ing] the | 11 |
|
