| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [verb] [prep] [det] | 727 |
|
| 2 | had [been] [vb pp] [prep] [det] | 600 |
|
| 3 | [verb] [been] used [prep] [det] | 81 |
|
| 4 | have [been] used [prep] [det] | 81 |
|
| 5 | had [been] used [prep] [adj] | 33 |
|
| 6 | had [been] use [prep] [det] | 12 |
|
| 7 | had [be] used [prep] [det] | 12 |
|
| 8 | [vb past] [been] used [prep] [det] | 12 |
|
