| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | department is responsible [prep] ensure | 5 |
|
| 2 | department is [adj] for ensure | 5 |
|
| 3 | department is [adj] for ensure | 5 |
|
| 4 | department is [adj] [prep] ensure | 5 |
|
| 5 | department is [adj] [prep] ensuring | 5 |
|
