| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which had been [verb] for [adj] | 31 |
|
| 2 | which had been [vb pp] for [adj] | 25 |
|
| 3 | which had been used [prep] [adj] | 8 |
|
| 4 | which had been used [prep] [adj] | 8 |
|
| 5 | [pron] had been used for [adj] | 7 |
|
| 6 | which have been used for [adj] | 6 |
|
| 7 | which [verb] been used for [adj] | 6 |
|
| 8 | which had [be] used for [adj] | 5 |
|
| 9 | which had been use for [adj] | 5 |
|
| 10 | which had [been] used for [adj] | 5 |
|
| 11 | which had been used for [adj] | 5 |
|
| 12 | which had be used for [adj] | 5 |
|
| 13 | which [vb past] been used for [adj] | 5 |
|
