| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] four | 9 |
|
| 2 | have be [v-ing] [prep] four | 9 |
|
| 3 | have be [v-ing] for four | 7 |
|
| 4 | have be [v-ing] for four | 7 |
|
