| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [adv] [prep] | 590 |
|
| 2 | they have been [v-ing] [prep] | 256 |
|
| 3 | they have been [v-ing] [adv] | 80 |
|
| 4 | they have been [adv] [prep] | 56 |
|
