| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] in [noun] | 575 |
|
| 2 | have [been] in london | 21 |
|
| 3 | [verb] [been] in london | 21 |
|
| 4 | had [been] [prep] london | 15 |
|
| 5 | [vb past] [been] in london | 14 |
|
| 6 | had [be] in london | 12 |
|
