| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] a | 594 |
|
| 2 | been [v-ing] [prep] a long | 30 |
|
| 3 | have been [prep] a long | 23 |
|
| 4 | have been [v-ing] a long | 14 |
|
