| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and ensure that | 509 |
|
| 2 | and ensure that | 222 |
|
| 3 | and to ensure that | 153 |
|
| 4 | and ensuring that | 74 |
|
| 5 | and ensures that | 28 |
|
| 6 | and ensured that | 21 |
|
| 7 | and ensure that | 11 |
|
