| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] important [subord] [verb] [prep] | 6 |
|
| 2 | [is] important [subord] [v-ing] [prep] | 6 |
|
| 3 | is important [subord] [verb] [prep] | 5 |
|
| 4 | [is] important when [verb] [prep] | 5 |
|
