| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be vital to | 209 |
|
| 2 | [be] vital to | 209 |
|
| 3 | [is] vital to | 103 |
|
| 4 | is vital to | 100 |
|
| 5 | [am/are] vital to | 42 |
|
| 6 | are vital to | 42 |
|
| 7 | [was/were] vital to | 39 |
|
| 8 | was vital to | 27 |
|
| 9 | be vital to | 17 |
|
| 10 | [be] vital to | 17 |
|
| 11 | were vital to | 12 |
|
| 12 | [been] vital to | 6 |
|
| 13 | been vital to | 6 |
|
