| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] for a long | 23 |
|
| 2 | have been [v-ing] for a long | 23 |
|
| 3 | had been [v-ing] for a long | 7 |
|
| 4 | 've been [v-ing] for a long | 6 |
|
