| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] a | 136 |
|
| 2 | have been [v-ing] an | 20 |
|
| 3 | have been having a | 8 |
|
| 4 | have been doing a | 7 |
|
| 5 | have been making a | 7 |
|
| 6 | have been waiting a | 6 |
|
| 7 | have been taking a | 6 |
|
| 8 | have been using a | 5 |
|
| 9 | have been attending a | 5 |
|
