| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is why it [is] important | 15 |
|
| 2 | is why it [is] important | 15 |
|
| 3 | is [adv] it [is] important | 15 |
|
| 4 | is [Wh adv] it [is] important | 15 |
|
| 5 | is [adv] it is important | 12 |
|
