| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been designed for | 43 |
|
| 2 | has be designed for | 16 |
|
| 3 | have be designed for | 11 |
|
| 4 | had be designed for | 8 |
|
| 5 | to have be designed for | 6 |
|
