| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [been] [verb] for | 215 |
|
| 2 | which have [been] [vb pp] for | 178 |
|
| 3 | which have [been] used [prep] | 61 |
|
| 4 | which have [been] used [prep] | 61 |
|
| 5 | [pron] have [been] used for | 42 |
|
| 6 | which [verb] [been] used for | 22 |
|
| 7 | [Wh det] have [been] used for | 22 |
|
| 8 | which have [been] used for | 22 |
|
| 9 | which have [been] used for | 22 |
|
| 10 | which have [been] use for | 22 |
|
| 11 | which have [be] used for | 22 |
|
