| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] had be [v-ing] | 37 |
|
| 2 | [adv] had [be] [v-ing] | 36 |
|
| 3 | [adv] had been [v-ing] | 35 |
|
| 4 | [adv] had [been] [v-ing] | 35 |
|
| 5 | before had [be] [v-ing] | 8 |
|
| 6 | before had [be] [v-ing] | 8 |
|
