| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [v-ing] [prep] | 1917 |
|
| 2 | i had [been] [v-ing] | 290 |
|
| 3 | i had [been] [prep] | 109 |
|
| 4 | i had [v-ing] [prep] | 6 |
|
| 5 | i [been] [v-ing] [prep] | 5 |
|
