| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | responsible for the development | 26 |
|
| 2 | necessary for the development | 13 |
|
| 3 | essential for the development | 6 |
|
| 4 | important for the development | 5 |
|
| 5 | available for the development | 5 |
|
