| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] at | 148 |
|
| 2 | had be looking at | 27 |
|
| 3 | had be working at | 18 |
|
| 4 | had be sitting at | 10 |
|
| 5 | had be staying at | 8 |
|
| 6 | had be staring at | 7 |
|
| 7 | had be standing at | 5 |
|
| 8 | had be living at | 5 |
|
