| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] three | 25 |
|
| 2 | have been [v-ing] for three | 21 |
|
| 3 | have been [v-ing] for three | 21 |
|
| 4 | has been [v-ing] [prep] three | 10 |
|
| 5 | had been [v-ing] [prep] three | 6 |
|
| 6 | 's been [v-ing] [prep] three | 5 |
|
