| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [verb] [prep] [art] | 7075 |
|
| 2 | have [been] [v-ing] [prep] [art] | 1987 |
|
| 3 | [verb] [been] [v-ing] [prep] [art] | 1987 |
|
| 4 | [vb past] [been] [v-ing] [prep] [art] | 824 |
|
| 5 | had [be] [v-ing] [prep] [art] | 723 |
|
| 6 | had [been] [v-ing] [prep] [art] | 721 |
|
