| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] [prep] a [adj] | 696 |
|
| 2 | had been [v-ing] [prep] a [adj] | 66 |
|
| 3 | [verb] been working [prep] a [adj] | 17 |
|
| 4 | have been working [prep] a [adj] | 17 |
|
| 5 | had been working [prep] [art] [adj] | 11 |
|
| 6 | had [been] working [prep] a [adj] | 6 |
|
| 7 | had been working [prep] a [adj] | 6 |
|
| 8 | [vb past] been working [prep] a [adj] | 6 |
|
| 9 | had been work [prep] a [adj] | 6 |
|
| 10 | had [be] working [prep] a [adj] | 6 |
|
| 11 | had be working [prep] a [adj] | 6 |
|
| 12 | had been working [prep] a [adj] | 6 |
|
