| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] for | 1650 |
|
| 2 | [verb] been [v-ing] for | 1564 |
|
| 3 | have been [v-ing] for | 1564 |
|
| 4 | has been [v-ing] [prep] | 1064 |
|
| 5 | [vb -s] been [v-ing] for | 380 |
|
| 6 | has [been] [v-ing] for | 270 |
|
| 7 | has [be] [v-ing] for | 270 |
|
| 8 | has be [v-ing] for | 270 |
|
