| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [be] developed for | 5 |
|
| 2 | which [vb base] be developed for | 5 |
|
| 3 | which [vb base] [be] developed for | 5 |
|
| 4 | which [vb base] [been] developed for | 5 |
|
| 5 | which [vb base] been developed for | 5 |
|
