| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had be [v-ing] | 125 |
|
| 2 | it had been [v-ing] | 125 |
|
| 3 | it had be raining | 15 |
|
| 4 | it had be going | 13 |
|
| 5 | it had be lying | 6 |
|
