| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] on | 185 |
|
| 2 | had be working on | 46 |
|
| 3 | had be sitting on | 14 |
|
| 4 | had be lying on | 10 |
|
| 5 | had be going on | 6 |
|
| 6 | had be standing on | 6 |
|
| 7 | had be living on | 5 |
|
