| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] essential [to-vb] | 49 |
|
| 2 | is [adv] essential [verb] | 40 |
|
| 3 | is therefore essential [verb] | 11 |
|
| 4 | is therefore essential [verb] | 11 |
|
| 5 | is not essential [verb] | 9 |
|
| 6 | is [not/n't] essential [verb] | 9 |
|
| 7 | is not essential [verb] | 7 |
|
| 8 | is [adv] essential have | 7 |
|
| 9 | is [adv] essential to have | 7 |
|
| 10 | is absolutely essential [verb] | 5 |
|
| 11 | is absolutely essential [verb] | 5 |
|
| 12 | is also essential [verb] | 5 |
|
| 13 | is also essential [verb] | 5 |
|
