| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] be designed for | 6 |
|
| 2 | to have [be] designed for | 6 |
|
| 3 | [to-vb] been designed for | 6 |
|
| 4 | [to-vb] [been] designed for | 6 |
|
