| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] used for [adj] [noun] | 12 |
|
| 2 | had [be] used for [adj] [noun pl] | 12 |
|
| 3 | had been used for [adj] [noun] | 12 |
|
| 4 | had be used for [adj] [noun] | 12 |
|
| 5 | had [be] used for [adj] [noun] | 7 |
|
